Definitely not "normal". Where did you see it ... race track or a station that sells racing gas ? I am fairly sure it is illegal to actually pump it into a vehicle. You can run it in a newer engine but it will destroy O2 sensors and Cat Converters pretty quickly. ALso, if the engine is designed for 87 octane you will gain nothing by putting a higher octane in it. Might even run worse
Advanced Automotive Machine
1971 Chevelle "Heavy Chevy" original owner
As the crew chief for a Nascar Pro-Stock I can tell you we tried some in the racecar and it made no noticable difference over the unleaded premium we normally use. The engines we are required to run are GM crate "Fast Burn" engines and they are designed to use pump gas. One of our competitors who is also a friend tried both types of gas on a dyno and horsepower actually was slightly less with the race gas. That being said it is great stuff for older engines and my 96 cubic inch stroker motor Harley loves the stuff... I believe the higher the compression ratio of your engine the more difference you'd see with the 110 octane stuff.
Man I have been in this discussion on some other boards. If your engine is built for pump gas you are wasting your money. I run VP 110 in my Honda 450 but it has 14:1 compression. Most agree that to much octane will cause a loss in performance. Octane controls how easily the fuel burns. More octane requires more heat which is what a higher compression piston achieves much like a diesel engine. It does smell good Around here I can get 100 octane Rocket brand in the pump that is unleaded. It'a about 5 bucks a gallon where VP 110 is 10 bucks. I need 105 minimum with 14:1.
So what Im getting from this discussion is the 110 octane will not increase my performance on a pump gas motor (which I dont really care about), its ok to run in a pump gas motor and I only need about 2.5 gals in a 15 gal tank to get that sweet exhaust smell.
Oh yeah, and the LEAD is ok too.
Sound about right?
Last edited by vmatt350; Jan 25th, 09 at 06:50 PM.