Have a an older craftsman ltv10 varidrive lawn tractor with a 10 horse tecumseh on it. Problem is it blows alot of oil out the breather. Currently running without an air filter or the breather hooked up so I can see what's going on, no mowing or driving just runnign the engine. I got the thing from my Dad, and he said it was saturating the air filter with oil. Oil does not seem to be over filled, so I am curious what other things can cause this problem?