Just got off the phone with the guys at F&L fuels. They were very helpful about what you may need. This fuel technician had a lot to say about what is being used out there. So here it goes:

Many people in the desert run VPC12 or 76/108 octane fuels for more HP, NO anythint above 100octane will not give you more HP and they cant say this enough. The F&L equivalent is SP-1 (their 111 octane leaded gas)

For horsepower anything above 100 octane is not going to get you anymore horse power, again. Current F1 and CART cars only run 100 octane and thats for 800+hp and for supercharged and turbo'd motors.

If you want your car to go faster you need more BTUs and believe it or not pump gas 92 has higher BTUs rating than 111 octane. For engines that run up to 6000 max rpm and have a fuel management system, efi, street gas is the preferable fuel for maximum HP and speed, EFI removes the overfueled detonation problems.

The Japanese have been experimenting heating and cooling these fuels before induction but have been frustrated with the outcome. No benefit shown. They were hopeing to heat (atomize) or cool (denser) fuels would change the burn performance. Leaving fuel at air temp is best.

Regarding higher RPM engines. If you run 6 - 12000 rpm, and have a fuel management system you may be able to easily get away with using only pump gas. Especially in a rotary because Mazdas typically dont have high octane requirements due to the fuel/oil mix. They are designed to run higher RPM at a lower octane. Only when you hit 10000+ rpm in a Mazda do you need the extra higher octane. This is where the higher octane is needed (Higher RPM ranges) it has a faster burn rate. So if you just cruise the dunes below around 7000rpm you shouldnt need 111. But if you crank all day at high RPM 111 is suggested to avoid detonating the motor.

His suggestion was if ever you are unsure about what to run an any motor, run street 92octane first and if at high rpms the engine knocks or pings, add a 50% mix of 111 and try again if this doesn't fix the ping go 100% 111.

Also the higher the compression engine the lower the octane needs to be. Again higher octane for higher rpm.

Their cost per gallon is and excellent $3.85, they will deliver 55 gal drums, not 30 unless they are in the area. Fuel is available weekdays from 7-5 and not on weekends. Their distribution center is in Long Beach off the 710 and PCH at 1543 16th st and PCH, ask for Fred 562-432-3946. They will pump to fuel jugs if you got them and their primary use is for the race market.

They also offer a 113 and 118 leaded and 101 unleaded.

Good luck,
Tell them Kelly sent you if you call, maybe they'll remeber me and give me a free gallon or two for the heads up. Doin' that research.

Hey Kelly, did I read right that higher compression engines need lower octane levals? I thought it was the opposite.

Thats what they said. I guess if you think of a diesel, a high compression plugless engine uses a very low octane fuel. The compression increase the ignition.

Heres my 2 cents on the info provided. As far as naturally aspirated motors go I believe the info is more or less correct.

But for a turbo/supercharged motor WRONG. Boosting creates detonation, the reason for higher octane fuels as well.

No car in NHRA will continue running with 92.

Nascar: 76 110 octane gasoline, naturally aspirated

F1: ELF 100 octane gasoline, naturally aspirated

CART: Valvoline methenol, turbocharged

IRL: Valvoline methenol, naturally aspirated

The higher the octane the lower the "BTU" which is what gets rid of the detonation.

I believe the information given is correct but perhaps mis-understood or incorrectly typed?

My car requires 116 octane I leave the line at 6200 RPM shift at 8000 and have a turbo.

I do believe as well that too many people use race fuels without being needed.

Another note: Electronically controlled engines (EFI) can get away with lower octane even if turbo because the computer can retard the timing to remove detonation, but with a loss of power.

If anyone can correct me fine and I will take all advise because I am by no means an expert.

Higher Octane Gasoline has a slower burn rate than low octane gas. High compression engines, whether that be high static compression or forcing air into the combustion chamber with a supercharger or turbocharger, require a slower burn rate fuel. Either the information given was completely wrong or was misunderstood. There is a reason that Pro-Stock engines with 16 to 1 compression use high octane fuel and it isn't because they like spending upwards of $12 a gallon for the fuel. Likewise, NASCAR doesn't use 92 octane for a reason ... they also have 15 to 1 compression. Do whatever you feel is right for you and your engine, but I would strongly suggest you get a second opinion before you destroy your engine. I never use less than 110 in my engine and I run 12 1/2 to 1. Not attacking anyone, just trying to help someone keep their engine together.

I run 100 octane low lead av gas available at your local community airport last time I checked it was 2.25 a gal. YEA