Octane Ratings

[negatron]

Clickes

Read that and see the quote that "Using high octane fuel for an engine makes a difference when the engine is producing its maximum power. This will occur when the intake manifold has no air restriction and is running at minimum vacuum. These conditions are present only when the accelerator is totally depressed."

[Hsien]

Clickes

Read that and see the quote that "Using high octane fuel for an engine makes a difference when the engine is producing its maximum power. This will occur when the intake manifold has no air restriction and is running at minimum vacuum. These conditions are present only when the accelerator is totally depressed."

interesting info..

[CORZZA]

Very interesting thanks alot!

[DHC09]

Just out of interest

I read somewhere awhile back that our vvti engines benefit (more so than others) from using high octane fuel. So was wondering if anyone uses/tried that Shell Optimax Extreme (100 octane + ethanol)?