difference between rich and lean
I Like Tires
Joined: Aug 2010
Posts: 4,828
Likes: 250
From: Texas
Originally Posted by bluecar5556
I agree, 2 cycles will burn up even quicker under excessively lean conditions due to it also being starved of oil, that's what I meant by irrelevant. Very good point, the splash and spray from the crankshaft cools the underside of the piston but that doesn't help the poor little exhaust valve. 
What this all boils down to is do not run your engine excessively lean, bad things happen.
What this all boils down to is do not run your engine excessively lean, bad things happen.
And I've always wondered since they say the 04-05 5.4s run lean especially with a CAI if they are having problems with that at high mileage.