haha, the octane theories.."hmmm, if I buy the highest octane gas, then I'd get the highest possible performance for that gas"

WRONG, WRONG, WRONG!!! in simple terms, octane is just a measure of how well the mixture acts during compressed loads. As pressure goes up during the compression part of the motor, temperature increases also. If you have too much pressure caused by a higher-compression motor, the air-fuel mixture reaches above the auto ignition point causing what we know as engine knock (Thermodynamics, Boles and Cengel, page 460).

----Having an EX motor does not need such a high octane. 87 is perfectly fine.


------But I would look more into what additives could help clean off residue on your valves and so forth. I like to use Cheveron cause they make the inside of my engine feel good. At least that's what the commercial says..Plus, they always have cute cars and very nice Bathrooms for me to POOP ON!!!!:thumbup: