Originally Posted by fung_kyle
How many gallons can an engine go through before it loses it power, and when does the power increase?
assuming you are in grup B : 30 minutes final + 3 x 5min qualifying
most power increase : usually your 3rd or 4th races
power decreasing : usually after 5th or 6th races
Complete engine rebuild or sell that engine after 5th or 6th races.
So I guess reaching 3 gallons is already considered lucky.
( I usually try to rotate the flywheel and feel the pinch. If it easy to twist, it means the engine is done. )