Type of oil?

[Grunnsetning]

I was wondering what type of oil everyone's using?

I normally only run mobile 1 but I don't see where they make a 5w50.

Every dam ford dealer is out of motorcraft.

The castrol syntec,which im not a big fan of, doesn't meet the requirement ford has in thier brochure.

What's required for the break in routine of the gt500? The only thing I have seen is a synthetic oil change at 500 miles but nothing else.

Thanks for the replies.

[Alloy Dave]

I was wondering what type of oil everyone's using?

I normally only run mobile 1 but I don't see where they make a 5w50.

Every dam ford dealer is out of motorcraft.

The castrol syntec,which im not a big fan of, doesn't meet the requirement ford has in thier brochure.

What's required for the break in routine of the gt500? The only thing I have seen is a synthetic oil change at 500 miles but nothing else.

Thanks for the replies.

Where did you see the oil change at 500 miles?

 

When you say the Castrol doesn't meet the spec, do you simply mean it's a DIFFERENT spec, or is the Castrol a LOWER spec? It's ok to use a higher spec.

 

As for me, I'm in the minority...I'm not using 5W-50...I'm using 15W-50.

 

Dave

[Grunnsetning]

Where did you see the oil change at 500 miles?

 

When you say the Castrol doesn't meet the spec, do you simply mean it's a DIFFERENT spec, or is the Castrol a LOWER spec? It's ok to use a higher spec.

 

As for me, I'm in the minority...I'm not using 5W-50...I'm using 15W-50.

 

Dave

Castrol says it meets ford WSS-M2C931-A.

The gt500 manual says oil meeting spec WSS-M2C931-B.

My brother in law got a gt500 vert from a dealer in town here and they told him to bring it in at 500 for a oil change to synthetic and he thought they said some sort of aluminum treatment but he doesnt pay attention to details.

[68fastback]

Castrol says it meets ford WSS-M2C931-A.

The gt500 manual says oil meeting spec WSS-M2C931-B.

My brother in law got a gt500 vert from a dealer in town here and they told him to bring it in at 500 for a oil change to synthetic and he thought they said some sort of aluminum treatment but he doesnt pay attention to details.

 

I'm pretty sure the -A and -B spec are the same ... just at two diff points in time (I think the Motorcraft oil is Castrol), but not sure... at least that's what buddy at Ford dealer told me late last summer.

 

I don't thein Ford specs any change at 500, but I'd do it -- a good idea and it sure can't hurt. I wouldn't add any metal-based additives... a half-dose of Lucas Full-Synthetic Oil Stabilizer maybe ...after second or third oil change...

 

Just saw your post count! Welcome to SU Grunnsetning!!! (can I just call you Grun :-)

 

-<edit:> btw, the oil that comes in the car is full-synthetic

[Ripthedealeroff]

Where did you see the oil change at 500 miles?

 

When you say the Castrol doesn't meet the spec, do you simply mean it's a DIFFERENT spec, or is the Castrol a LOWER spec? It's ok to use a higher spec.

 

As for me, I'm in the minority...I'm not using 5W-50...I'm using 15W-50.

 

Dave

 

Ralph at FOMOC said first oil change at 5000 miles...I did 2,500. I use Castrol Syntec 5w-50w and it is fully sanctioned by ford. Too much nit picking can make you sick...it's only a car...a very good car at that. (K&N oil filter).

[LuckySnake]

Where did you see the oil change at 500 miles?

 

When you say the Castrol doesn't meet the spec, do you simply mean it's a DIFFERENT spec, or is the Castrol a LOWER spec? It's ok to use a higher spec.

 

As for me, I'm in the minority...I'm not using 5W-50...I'm using 15W-50.

 

Dave

Dave, +1. I'm considering switching to 15W-50 also, for at least summer after a few pass's down the quarter mile April 20. Are you comming to Gateway on the 20th? What brand of oil are you using?

 

Thanks,

Blayne

[Super Snake]

Dave, +1. I'm considering switching to 15W-50 also, for at least summer after a few pass's down the quarter mile April 20. Are you comming to Gateway on the 20th? What brand of oil are you using?

 

Thanks,

Blayne

 

 

I heard Royal Purple is a good oil to use

I'm doing my first OC this weekend (1200 miles)

 

Oh PS Welcome Grun

uh did he say it was OK to call him Grun?

anyway WELCOME

[jcthorne]

Dave, +1. I'm considering switching to 15W-50 also, for at least summer after a few pass's down the quarter mile April 20. Are you comming to Gateway on the 20th? What brand of oil are you using?

 

Thanks,

Blayne

 

 

Why would you folks switch to 15w-50. At operating temps these are the same viscocity range oils but at cold startup they are very different. The 5w-50 will flow to the cams and bearings faster at startup. Also the 15w-50 can easily overpressure the timing chain adjusters and place a large load on the front cam bearing due to high oil pressures at first startup unitl the 15w oil thins down at temp. I do not see the benifit of making this change at all and quite the detriment. Other than cost or favorite brand issues, this is a net loose proposition.

 

Call Castrol and they will let you know the 5W-50 currently being sold meets the revised Ford spec, just the bottle printing/labels have not yet been updated. The revision was very minor, something to do with an API reference.

[Super Snake]

Why would you folks switch to 15w-50. At operating temps these are the same viscocity range oils but at cold startup they are very different. The 5w-50 will flow to the cams and bearings faster at startup. Also the 15w-50 can easily overpressure the timing chain adjusters and place a large load on the front cam bearing due to high oil pressures at first startup unitl the 15w oil thins down at temp. I do not see the benifit of making this change at all and quite the detriment. Other than cost or favorite brand issues, this is a net loose proposition.

 

Call Castrol and they will let you know the 5W-50 currently being sold meets the revised Ford spec, just the bottle printing/labels have not yet been updated. The revision was very minor, something to do with an API reference.

 

Thanks for the info

that was good to know

[Grunnsetning]

Thanks for the info

that was good to know

Yes indeed, thx for the info.

 

And yes Grunn is fine. I'm just glad to finally have found a good gt500 forum.

[svtkeith]

Welcome aboard Grunn, all good people here bud. :happy feet:

 

 

 

However keep your eye out for SCGT500 AKA ( Poop dog).

[Son of GT]

Dave (and others),

You're not the minority. I have been running 15w50 since my first oil change too. As I have mentioned here before, I swear by Royal Purple and recommend it to all.

 

K&N 2010 Filter and 15w50 Royal Purple. That's what I use.

 

BTW for those who may not be exactly sure, the manual only calls for 6.5 quarts of oil NOT 7 quarts that I have read some dealers put into some of the owners cars here.

[sicilianjg]

I was wondering what type of oil everyone's using?

I normally only run mobile 1 but I don't see where they make a 5w50.

Every dam ford dealer is out of motorcraft.

The castrol syntec,which im not a big fan of, doesn't meet the requirement ford has in thier brochure.

What's required for the break in routine of the gt500? The only thing I have seen is a synthetic oil change at 500 miles but nothing else.

Thanks for the replies.

 

I'm not going to give a course on motor oil, however keep this in mind. Use ONLY 5W50 full synthetic in your car. When the engine is cold, the oil acts like a 5 weight and it FLOWS EASILY. As the temperature gets to 212, the oil thickens and acts like a 50 weight.

[Alloy Dave]

Castrol says it meets ford WSS-M2C931-A.

The gt500 manual says oil meeting spec WSS-M2C931-B.

My brother in law got a gt500 vert from a dealer in town here and they told him to bring it in at 500 for a oil change to synthetic and he thought they said some sort of aluminum treatment but he doesnt pay attention to details.

I've heard nor read no mention of a 500 mile oil change...although I'm going to do one just because I think it's the right thing to do.

 

As for the oil specs, you can do as you please. I don't let that minor difference bother me.

 

Read the following threads for more info:

http://www.stangsunleashed.com/forums/inde...hl=WSS-M2C931-A

 

http://www.stangsunleashed.com/forums/inde...hl=WSS-M2C931-A

 

http://www.stangsunleashed.com/forums/inde...hl=WSS-M2C931-A

 

Dave

[Alloy Dave]

I'm not going to give a course on motor oil, however keep this in mind. Use ONLY 5W50 full synthetic in your car. When the engine is cold, the oil acts like a 5 weight and it FLOWS EASILY. As the temperature gets to 212, the oil thickens and acts like a 50 weight.

I'm going to use 15W-50. 15W flows the same as 5W at the lowest temps I'll see in my car....I don't drive in cold weather.

 

Dave

[Alloy Dave]

Yes indeed, thx for the info.

 

And yes Grunn is fine. I'm just glad to finally have found a good gt500 forum.

I failed to welcome you...my bad. Welcome to the forum. I agree with one other member...watch out for poop dog (SCGT500). He's a really nice guy, is very good with cars, has a good demeanor, and makes wonderful mailboxes.

 

Bill, can I be in the "loop" now?

 

Dave

[Alloy Dave]

Dave, +1. I'm considering switching to 15W-50 also, for at least summer after a few pass's down the quarter mile April 20. Are you comming to Gateway on the 20th? What brand of oil are you using?

 

Thanks,

Blayne

As for my oil brand...I think Castrol makes what I need...that's my preference. I'll be changing my oil just before leaving for Hermann...I have 420 miles on my car right now.

 

As for Gateway...is that the name of the race track near St. Louis? If so, yes...I'm there. I've only drag raced once in my life....20 years ago...you guys can have a laugh at my expense...a corporate finance guy wearing a helmet. And my car is devoid of performance mods...so I'll be the slowest one of the group I'm sure (unless RUF is coming I just about rolled out of my chair laughing typing that comment...RUF will be all over my butt now ).

 

Dave

[68fastback]

I'm not going to give a course on motor oil, however keep this in mind. Use ONLY 5W50 full synthetic in your car. When the engine is cold, the oil acts like a 5 weight and it FLOWS EASILY. As the temperature gets to 212, the oil thickens and acts like a 50 weight.

 

I don't think it thickens with heat, 5W50 just has the hot film protection of a 50W with the cold viscosity of a 5W, imo.

 

I don't think Royal Purple 15W 50 will hurt anything IF yo don't use the go pedal until it's fully warmed up, but, for the street 5W50 let's you start and drive safely. Another reason it's spec'd is for the slightly higher mileage the 5W gives -- especially when cold.

 

I'd use 5W50 synthetic and, after the first few oil changes, add a 1/2 the dose (1/2qt) of Lucas Full Synthetic Oil Stabilizer in the summer. If racing and after warmed, 15W50 racing or full qt of Lucas added is not a problem, imo.

 

Just my opinion tho -- I ain't no engineer

 

Dan

[Alloy Dave]

I don't think it thickens with heat, 5W50 just has the hot film protection of a 50W with the cold viscosity of a 5W, imo.

 

I don't think Royal Purple 15W 50 will hurt anything IF yo don't use the go pedal until it's fully warmed up, but, for the street 5W50 let's you start and drive safely. Another reason it's spec'd is for the slightly higher mileage the 5W gives -- especially when cold.

 

I'd use 5W50 synthetic and, after the first few oil changes, add a 1/2 the dose (1/2qt) of Lucas Full Synthetic Oil Stabilizer in the summer. If racing and after warmed, 15W50 racing or full qt of Lucas added is not a problem, imo.

 

Just my opinion tho -- I ain't no engineer

 

Dan

Correct Dan...oil does not thicken with heat. Just the opposite actually, it gets thinner. A multi-vis oil minimizes changes in viscosity as the temp increases...which is an excellent benefit. A 5W-50 will "act" like a 5-weight oil at low temps, and "act" like a 50-weight oil at high temps. "Act" means it has the viscosity and film protections you mention.

 

I don't understand his comment about he "doesn't want to give a class on oils".

 

Dave

[LuckySnake]

Why would you folks switch to 15w-50. At operating temps these are the same viscocity range oils but at cold startup they are very different. The 5w-50 will flow to the cams and bearings faster at startup. Also the 15w-50 can easily overpressure the timing chain adjusters and place a large load on the front cam bearing due to high oil pressures at first startup unitl the 15w oil thins down at temp. I do not see the benifit of making this change at all and quite the detriment. Other than cost or favorite brand issues, this is a net loose proposition.

 

Call Castrol and they will let you know the 5W-50 currently being sold meets the revised Ford spec, just the bottle printing/labels have not yet been updated. The revision was very minor, something to do with an API reference.

Untill recently a viscosity spread of 5W-50 wasn't even offered to the public. I am not an oil expert but have read that 5W-50 will break down faster under load than 20W-50. What you are saying about overpressurizing the timing chain adjusters and placing an over exerting load on the front cam bearing may be possible if you don't allow for proper warmup of engine. With warmer temperatures a 15W-50 or 20W-50 should be completely safe to use IMO.

Auto makers have started to use 5W-50 to improve fuel mileage, not because it's better oil for your engine IMO. I have used 20W-50 in Ford engines for many years with excellent protection. I have bearings from a high performance Ford engine with over 50K and no visable bearing wear.

I know what the book says and am not criticizing anyone for using the recommended oil, I have it in my engine. I am considering the change because the average temperature has increased by about 40 degrees from winter and I feel I could safely use a 15W-50 in my GT500 and have a better selection of brands.

The main reason I am even considering is because of the early break down of 5W-50 compared to oils with out such a big viscosity spread.

[svtkeith]

Untill recently a viscosity spread of 5W-50 wasn't even offered to the public. I am not an oil expert but have read that 5W-50 will break down faster under load than 20W-50. What you are saying about overpressurizing the timing chain adjusters and placing an over exerting load on the front cam bearing may be possible if you don't allow for proper warmup of engine. With warmer temperatures a 15W-50 or 20W-50 should be completely safe to use IMO.

Auto makers have started to use 5W-50 to improve fuel mileage, not because it's better oil for your engine IMO. I have used 20W-50 in Ford engines for many years with excellent protection. I have bearings from a high performance Ford engine with over 50K and no visable bearing wear.

I know what the book says and am not criticizing anyone for using the recommended oil, I have it in my engine. I am considering the change because the average temperature has increased by about 40 degrees from winter and I feel I could safely use a 15W-50 in my GT500 and have a better selection of brands.

The main reason I am even considering is because of the early break down of 5W-50 compared to oils with out such a big viscosity spread.

 

 

Hey Blayne, I maybe wrong here, but your first # 5W lets say, the W means winter and 5 represents the flow of your oil, in other words a 5 is less viscos then lets say a 15W at a cold temperature at start up were alot of your engine ware takes place and should not mean anything when the temp goes up, because thats what your last # 50 means it protects your engine at a higher temp than lets say a # 30, I can't see were a 5W50 would break down any faster than a 15W50, in high temp or high stress use as its your last # thats protecting your engine at that point and not your first # lets say 5, 15,or 20. Thats just what I understand about oil. I used to race ATV's several years ago, and we always found a 0W40 would perform as good as a 20W40, and believe me those engines were stressed to the limit, again this is JMO.

[Son of GT]

Gentlemen,

With all due respect, and with no intent to stir the pot so to speak, I will only say that I have run 15w50 as well as 20w50 in all of my cars that are listed below in my signature, and I have NEVER had any oil or engine issues related to the oil I have used. I just sold my 87 Mustang that had 140,000 miles on the odo, and that car ran as if it had just come off of the showroom floor. I had to pull and replace the oil pan about 8 years ago because the drain plug threads had worn out, and I can tell you that the pan did not have one MM of sludge buildup and the crank and rods looked like they were still new. My 2003 Marauder that is equipped with the 4.6 Cobra engine does not have ANY issue running the 15w50 RP either.

 

BTW, I did not pull this opinion out of my differental either. As a member of the Socity of Automotive Engineers (SAE), I had a discussion with the boys that certify oil, and they told me that running 15W50 or 20W50 in a warm weather climate is perfectly acceptable. Manufacturer's will typically cover their butts and indicate the use of a broad spectrum viscosity oil because of all the varied regional weather conditions that the vehicle might be used in. My friend's brand new 300 SRT calls for 0W50 oil. Zero? In Southern California? It's just not necessary. The lowest overnight tempature that we typically get during the "winter" here is 45 to 48 degrees, so we just do not need to use zero weight oil here.

 

I say to each his own and use what you want. Regional weather conditions will require the use of proper viscosity oils, but living in Southern California, unless I travel to the mountains for snow, I just don't have a need for 5W oil. I promise that I will be sure to let everyone here know if I blow my engine due to using incorrect viscosity oil, but I wouldn't wait for that to happen.

[LuckySnake]

Hey Blayne, I maybe wrong here, but your first # 5W lets say, the W means winter and 5 represents the flow of your oil, in other words a 5 is less viscos then lets say a 15W at a cold temperature at start up were alot of your engine ware takes place and should not mean anything when the temp goes up, because thats what your last # 50 means it protects your engine at a higher temp than lets say a # 30, I can't see were a 5W50 would break down any faster than a 15W50, in high temp or high stress use as its your last # thats protecting your engine at that point and not your first # lets say 5, 15,or 20. Thats just what I understand about oil. I used to race ATV's several years ago, and we always found a 0W40 would perform as good as a 20W40, and believe me those engines were stressed to the limit, again this is JMO.

Why were you using 0W-40? You must have been racing in some cold weather? The bottom line is 5W-50 will break down under shear loads before a 15W-50 no matter what kind of suplements are added. It's the larger spread in viscosity that's not as good. But I think you should use what is recommended, unless there is something better To each his own.

[rpretzel]

Gentlemen,

With all due respect, and with no intent to stir the pot so to speak, I will only say that I have run 15w50 as well as 20w50 in all of my cars that are listed below in my signature, and I have NEVER had any oil or engine issues related to the oil I have used. I just sold my 87 Mustang that had 140,000 miles on the odo, and that car ran as if it had just come off of the showroom floor. I had to pull and replace the oil pan about 8 years ago because the drain plug threads had worn out, and I can tell you that the pan did not have one MM of sludge buildup and the crank and rods looked like they were still new. My 2003 Marauder that is equipped with the 4.6 Cobra engine does not have ANY issue running the 15w50 RP either.

 

BTW, I did not pull this opinion out of my differental either. As a member of the Socity of Automotive Engineers (SAE), I had a discussion with the boys that certify oil, and they told me that running 15W50 or 20W50 in a warm weather climate is perfectly acceptable. Manufacturer's will typically cover their butts and indicate the use of a broad spectrum viscosity oil because of all the varied regional weather conditions that the vehicle might be used in. My friend's brand new 300 SRT calls for 0W50 oil. Zero? In Southern California? It's just not necessary. The lowest overnight tempature that we typically get during the "winter" here is 45 to 48 degrees, so we just do not need to use zero weight oil here.

 

I say to each his own and use what you want. Regional weather conditions will require the use of proper viscosity oils, but living in Southern California, unless I travel to the mountains for snow, I just don't have a need for 5W oil. I promise that I will be sure to let everyone here know if I blow my engine due to using incorrect viscosity oil, but I wouldn't wait for that to happen.

 

Good info, Son of GT. Now, someone like me in Denver, where temps range from -20 to 100+ degrees, should probably stick with the recommended viscosity oil.

[Grunnsetning]

But I think you should use what is recommended, unless there is something better To each his own.

 

Thats the thing, to me mobile 1 is superior. I've run it in everything and its great. But they don't offer the 5w, just the 15w. I live 15 miles from new orleans. The car is garage kept and cold is not a problem even if it wasn't.

Thx for all the replies but still haven't decided lol

[Alloy Dave]

Why would you folks switch to 15w-50. At operating temps these are the same viscocity range oils but at cold startup they are very different. The 5w-50 will flow to the cams and bearings faster at startup. Also the 15w-50 can easily overpressure the timing chain adjusters and place a large load on the front cam bearing due to high oil pressures at first startup unitl the 15w oil thins down at temp. I do not see the benifit of making this change at all and quite the detriment. Other than cost or favorite brand issues, this is a net loose proposition.

 

Call Castrol and they will let you know the 5W-50 currently being sold meets the revised Ford spec, just the bottle printing/labels have not yet been updated. The revision was very minor, something to do with an API reference.

thorne, we'll just have to agree to disagree on this one...that's ok.

 

I disagree with some of your statements. Please don't scare people by making statements indicating that what I'm doing is dangerous to my car.

 

1) The 15W-50 will NOT overpressure the timing chain adjusters or any other parts. The ONLY reason 5W is specified is so people can drive the car at low temps. Since I don't start mine in low temps...mine will never see the pressures that many others' cars will see.

 

2) Concerning your statement that 5W will get to bearings faster...then why don't you use an even thinner Multi-vis? I think what's more important than how FAST the oil gets there is the protection it gives when it DOES get there. Since the 5W is for colder temps...I'll bet you that my 15W oil will get to my bearings at 50 degrees ambient just as fast as your 5W oil will get to yours at 30 degrees ambient.

 

3) This is not a net lose proposition...this is called adjusting the maintenance on your car to the use of your car. Just like using higher octane with a 93 tune, or changing your oil more frequently if you live on a dusty road, etc.

 

Dave

[Alloy Dave]

Gentlemen,

With all due respect, and with no intent to stir the pot so to speak, I will only say that I have run 15w50 as well as 20w50 in all of my cars that are listed below in my signature, and I have NEVER had any oil or engine issues related to the oil I have used. I just sold my 87 Mustang that had 140,000 miles on the odo, and that car ran as if it had just come off of the showroom floor. I had to pull and replace the oil pan about 8 years ago because the drain plug threads had worn out, and I can tell you that the pan did not have one MM of sludge buildup and the crank and rods looked like they were still new. My 2003 Marauder that is equipped with the 4.6 Cobra engine does not have ANY issue running the 15w50 RP either.

 

BTW, I did not pull this opinion out of my differental either. As a member of the Socity of Automotive Engineers (SAE), I had a discussion with the boys that certify oil, and they told me that running 15W50 or 20W50 in a warm weather climate is perfectly acceptable. Manufacturer's will typically cover their butts and indicate the use of a broad spectrum viscosity oil because of all the varied regional weather conditions that the vehicle might be used in. My friend's brand new 300 SRT calls for 0W50 oil. Zero? In Southern California? It's just not necessary. The lowest overnight tempature that we typically get during the "winter" here is 45 to 48 degrees, so we just do not need to use zero weight oil here.

 

I say to each his own and use what you want. Regional weather conditions will require the use of proper viscosity oils, but living in Southern California, unless I travel to the mountains for snow, I just don't have a need for 5W oil. I promise that I will be sure to let everyone here know if I blow my engine due to using incorrect viscosity oil, but I wouldn't wait for that to happen.

Son,

 

The comment you made that I highlighted in blue is, IMO, the most important factor. If I lived in Minnesota and drove the car year round...I'd use 5W-50. I don't, and I won't.

 

Dave

[svtkeith]

Why were you using 0W-40? You must have been racing in some cold weather? The bottom line is 5W-50 will break down under shear loads before a 15W-50 no matter what kind of suplements are added. It's the larger spread in viscosity that's not as good. But I think you should use what is recommended, unless there is something better To each his own.

 

 

Blayne, I used to race them year round, cold weather and hot weather, and with no liquid cooling, in the summer they used to run incredibly hot and never had one breakdown with Amsoil 0W-40.

 

I could see using 15W-50 or 20W 50 where high revs, like a formula One car would be the norm. But in a car where you are not going to exceed 6250 RPM for prolonged periods of time, your shear wear between a 5W 50 and 15W 50 would probably not be a factor, again this is JMO.

 

Also, with the tighter tolerances of today's engines, I believe there's a greater need for a broader viscosity oils. Just wondering if the added oil pressure would cause any problems but in any event, if you feel you need to use a certain kind of oil or a different viscosity than recommended than by all means use it.

[Blue Oval]

All of my other modular ford engines use 5W 20. Honda spec & some new Chrysler specs call for the same oil.

I always thought it was due to tighter tolerances. I use Mobil 1 10w30 in my '90 5.0.

[sicilianjg]

I'm going to use 15W-50. 15W flows the same as 5W at the lowest temps I'll see in my car....I don't drive in cold weather.

 

Dave

 

Dave thats up to you, but simply stated, the "5" relates to the viscosity @ ambient temperture (normally 100 F), the "W" stands for Winter, meaning the oil is suitable for winter use, and the 50 is viscosity of the oil at the second test temperture (normally 212 F) and I live in Tucson AZ

 

Joe