Racing fuel

[Jstas]

Purple gas, Sunoco 100 octane stuff that you can get at most tracks. Has anyone ever run it in a Lightning?

I was wondering because I noticed a difference between 92 and 94 octane and the manual says to use the highest octane available. I was wondering if anybody found a limit to that octane level yet.

Before anyone gets up my butt about noticing the difference in octane, the difference I noticed was on a long trip (~1250 miles) was in running temperature and gas mileage. It was a pretty drastic difference of about 10 degrees and 2.5-3.0 mpg. If I can notice that much of a difference, I can only imagine what kind of results race gas would provide in temperature and even power production through better timing advance.

[MadRabbit]

Once I was running low at the track and just for yuks I put in a couple gallons of VP 116 octane. It made no difference in my 1/4 mile times, it just cost more. I\'m sure that\'s because I don\'t have a chip to tune for that octane. Like I said it was just to see what would happen.

[SVTOA Webmaster]

Well.. oftentimes, when this subject is debated, some folks say that the higher octane won\'t help any if you don\'t need it, but there is another issue- FUEL QUALITY!! Some pump gas is not of the higest QUALITY. Octane rating aside, race fuel tends to be a better quality fuel- not some watered down/loaded with additives/mixed with ethanol low quality gasoline. I find with my car, it runs the best on the Sunoco 100 unleaded we sell at Great Lakes Dragaway. It really does make a difference in both performance as well as gas mileage and driveability...

[Smokintruck#1]

I won't run the Sunoco fuel anymore until they take that MTB crapp out of it. I use the Turbo Blue about 5gal sreet/strip really made a difference for me 105 Octane. Also have ran CanAm at the sunoco pump here.

[I1AGAIN]

With a stock truck 93 octane is plenty. When you add more boost and more agressive tuning then octane becomes more of an issue. It also depends how agressive your tune is. You can have a truck fully modified and run 93 if the tune is set up to do so. I run a superchip dual program chip and one side is set up to run on 93 and the other is a race side that requires the use of 100 octane.

Dave Laxton