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Oil weight?


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Ford spec is for 5W-20 full synthetic. However, I have a bunch of 5W-50 laying around for my GT500. Any issues with using the 5W-50 in the 5.0 liter? Thanks.

 

For warranty compliance I would stick with the Ford recommended weight. Keep in mind that all manufactures now take an oil sample if there is any warranty work needed on the long block. They will have the oil sample analyzed for the correct type & weight along with the how long the oil has been in the crankcase.

 

Steve

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For warranty compliance I would stick with the Ford recommended weight. Keep in mind that all manufactures now take an oil sample if there is any warranty work needed on the long block. They will have the oil sample analyzed for the correct type & weight along with the how long the oil has been in the crankcase.

 

Steve

Thanks, Steve..... My feelings as well..
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  • 1 month later...

I just switched to the Motorcraft Synthetic Blend 5W30.

If the GT Track Pack with the same Coyote I have is spec'd for 5W50, I should be able to get away with 5W30.

 

I do, however, have a heated garage and the car is not left out in the cold.

 

The engine is so much quieter now.

Time will tell if I have messed up or not.

 

I have never been happy with the oil consumption numbers with my Mustang, 1500 miles/qt.

It will be interesting to see what happens with 5W30.

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  • 2 months later...

I just switched to the Motorcraft Synthetic Blend 5W30.

If the GT Track Pack with the same Coyote I have is spec'd for 5W50, I should be able to get away with 5W30.

 

I do, however, have a heated garage and the car is not left out in the cold.

 

The engine is so much quieter now.

Time will tell if I have messed up or not.

 

I have never been happy with the oil consumption numbers with my Mustang, 1500 miles/qt.

It will be interesting to see what happens with 5W30.

 

 

 

 

818 miles on my recent oil change to 5W30.

I checked it and added a quarter quart and it brought it back to the full mark.

 

Hmmm, 1500 miles a quart with 5W20 and extrapolated distance of 3,272 miles a quart with 5W30.

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last I checked my engine warranty expired when i checked off the 624 HP box on the Shelby Order Sheet.

 

i'm more concerned with oil sheer on a high horsepower supercharged engine

 

just my 2cents

Oil shear! Have not heard that one for a while. Some of the best and most entertaining reading was the unleashed beast massive oil thread. I kind of miss that...

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818 miles on my recent oil change to 5W30.

I checked it and added a quarter quart and it brought it back to the full mark.

 

Hmmm, 1500 miles a quart with 5W20 and extrapolated distance of 3,272 miles a quart with 5W30.

 

I would be curious if you were to switch to a different oil brand like AMSOIL with low Noak numbers if you would use less or even no more oil.

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I had to look up what NOAK meant.

 

I am going to wait a while before going back to full synthetic.

 

At 1000 miles on the car, I switched over to 5W20 synthetic and that's when I began to notice oil consumption. I wonder of this delayed the engine breaking in.

If I babied the car, I would get 1500 miles a quart. If I drove hard, it would go as low as 1100 miles a quart on full synthetic Motorcraft 5W20.

 

I decided to go back to the blend in case I delayed the break in period.

Then I drove the last 818 miles hard, and as we can see, I doubled the oil mileage with synthetic blend using 5W30.

 

On a side note, Ford apparently went away from oil squirters for the Coyotes in early December 2011, or so I have read. My build date is late January 2012, so I am figuring I have the coated pistons with the changed drainage holes and different rings.

 

If true, I wonder if these new coated pistons with different rings take longer to break in?

 

I can say that my engine sounds so much better using 5W30. The 5W20 made the engine sound "thrashy", if that makes any sense.

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I have been going with the Motorcraft full synthetic 5W-20 on the 624HP. No loss of oil. I use the 5w-30 blend on all my other late model Ford toys as specified.

You mean you are using the manufacturer’s recommended oil for that motor?

Those Ford engineers don’t know what they are doing, you need to switch to Amway Oil in any other weight than what is recommended. :stirpot:

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You mean you are using the manufacturer’s recommended oil for that motor?

Those Ford engineers don’t know what they are doing, you need to switch to Amway Oil in any other weight than what is recommended. :stirpot:

 

 

Then why you run a Griggs suspension on your Ford that a different set of engineers spent hours on the track and off developing :hysterical:

 

Could not help it sorry lol. It comes down to we all setup and believe in different things when we modify are cars, whether power, suspension etc we all love it and share :thumbsup:

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Then why you run a Griggs suspension on your Ford that a different set of engineers spent hours on the track and off developing :hysterical:

 

Could not help it sorry lol. It comes down to we all setup and believe in different things when we modify are cars, whether power, suspension etc we all love it and share :thumbsup:

Good point, haha.

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  • 8 months later...

I had to look up what NOAK meant.

 

I am going to wait a while before going back to full synthetic.

 

At 1000 miles on the car, I switched over to 5W20 synthetic and that's when I began to notice oil consumption. I wonder of this delayed the engine breaking in.

If I babied the car, I would get 1500 miles a quart. If I drove hard, it would go as low as 1100 miles a quart on full synthetic Motorcraft 5W20.

 

I decided to go back to the blend in case I delayed the break in period.

Then I drove the last 818 miles hard and I doubled the oil mileage with synthetic blend using 5W30.

 

On a side note, Ford apparently went away from oil squirters for the Coyotes in early December 2011, or so I have read. My build date is late January 2012, so I am figuring I have the coated pistons with the changed drainage holes and different rings.

 

If true, I wonder if these new coated pistons with different rings take longer to break in?

 

I can say that my engine sounds so much better using 5W30. The 5W20 made the engine sound "thrashy", if that makes any sense.

 

First the bad part:

When I swithched to 5W30 synthetic blend, although I used less oil, it was not stellar.

I was overly optimistic thinking by extrapolation that I was perhaps getting 3K per quart.

Turns out I was getting just shy of 2K per quart.

 

Now for the good part:

My Mustang finally broke in and stopped burning oil, at least not burning it in the copious amounts it had been.

 

I put in a full sythnetic 5W30 at 10,500 miles a few weeks ago, and now, at 11,500 miles, there is hardly any oil usage showing on the stick, something less that a quarter of a quart. That's a first for this car.

I had been so used to seeing the oil disappearing on the stick at a 1,000 miles.

 

The break in sure took a long time.

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