doctorjay Posted May 9, 2008 Report Share Posted May 9, 2008 So, I let my wife drive the Shelby yesterday as I really needed a hunting trip and room to buy some corn and dog food etc. She has only driven it 2 times in the past 5 months but really enjoys the power. Anyway - she told me last night that she filled it up with gas and asked 'what kind does it use'! ! !? She filled it with mid-grade 89 octane. Is this really a problem or not at all. thanks Jay Link to comment Share on other sites More sharing options...
Grabber Posted May 9, 2008 Report Share Posted May 9, 2008 At least she used the mid grade stuff. If it were me, I would go down to the auto parts store and buy a bottle of the octane booster and add it to the fuel to up the octane level. Link to comment Share on other sites More sharing options...
1268 Posted May 9, 2008 Report Share Posted May 9, 2008 If your modded with a tune...yep it's an issue. If not...I wouldn't sweat it. Link to comment Share on other sites More sharing options...
ColdwaterHotrod Posted May 9, 2008 Report Share Posted May 9, 2008 if it doesn't PING under WOT you're OK, if it does PING do what grabber said Link to comment Share on other sites More sharing options...
68fastback Posted May 9, 2008 Report Share Posted May 9, 2008 Ping + fixed disp S/C = yikes! imo Yeah, if it's stock not too much of a worry ...just take her easy and listen for any trace of ping; if modded/tuned definately no WOT, imo, and get some Torco booster asap (speed shops often carry it) until you can use up the 89 and get some 91/93 in her. Detonation with a fixed disp S/C is flirting with a hole in a piston or If you have a tractor/mower, you can siphon the 89 into a couple of 6 gal Blix containers and use it for mowing so you won't have this on your head for the next couple hundred miles ...just a thought. Link to comment Share on other sites More sharing options...
svtkeith Posted May 9, 2008 Report Share Posted May 9, 2008 I'ts very important to... . NOT GO WIDE OPEN THROTTLE. .... you should be ok just normal driving. Like CW said, as long as there is no PINGING that is. Link to comment Share on other sites More sharing options...
08-VB/W Posted May 10, 2008 Report Share Posted May 10, 2008 Don't fall for the octane booster gag . . .. Do the math - it will boost your octane by ~0.1 point per bottle (in a full tank). Get a couple of gallons of toluene from the hardware store. It's 112 octane and linear - but your economy will be crap until it burns up that tank of blend. Link to comment Share on other sites More sharing options...
68fastback Posted May 10, 2008 Report Share Posted May 10, 2008 Toluene will work, just don't want to breath much of it. It's the primary ingredient in a many octane boosters. Here's more info on it and precisely how much is needed for a target octane improvement. I don't know what Torco Octane Booster is but it is trusted by many racers and widely used. Link to comment Share on other sites More sharing options...
FiaCobra Posted May 10, 2008 Report Share Posted May 10, 2008 Next time tell her to stay in the kitchen !! Link to comment Share on other sites More sharing options...
doctorjay Posted May 14, 2008 Author Report Share Posted May 14, 2008 Well, it happened right before we took it on a long (500 mile) road trip. Thanks for all the advice. I set the cruise on 77 (2000 rpm) and ran that tank of gas to almost empty. Filled up with premium and ran that tank 1/2 way before filling again with premium. Of course then I got pulled over by Texas finest (Department of Public Safety). Radar said 78 in a 70 and of course I have no front licensce plate - you have to have 2 in Texas!. Anyway, got off with 2 warnings, NO TICKET. Also, never heard any pinging and though I can't keep her in the kitchen - she knows what to put in the SHELBY now. Link to comment Share on other sites More sharing options...
68fastback Posted May 14, 2008 Report Share Posted May 14, 2008 Glad she's all cleaned out now ....and no tickets!! :happy feet: Dan Link to comment Share on other sites More sharing options...
SPRSNK Posted May 14, 2008 Report Share Posted May 14, 2008 Well, it happened right before we took it on a long (500 mile) road trip. Thanks for all the advice. I set the cruise on 77 (2000 rpm) and ran that tank of gas to almost empty. Filled up with premium and ran that tank 1/2 way before filling again with premium. Of course then I got pulled over by Texas finest (Department of Public Safety). Radar said 78 in a 70 and of course I have no front licensce plate - you have to have 2 in Texas!. Anyway, got off with 2 warnings, NO TICKET. Also, never heard any pinging and though I can't keep her in the kitchen - she knows what to put in the SHELBY now. Lucky guy! I got pulled over Sunday in Garza County for doing 78 in a 70 and they gave me the ticket. Now to do some def driving class Link to comment Share on other sites More sharing options...
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