I dunno-I just sold my spousal unit's car last spring-250k miles on a gas-burner Nissan 2.0l, didn't burn or leak any oil between changes. K&N ever since 26k miles. I also used any brand of oil in it, usually the cheapest. Changed it every 3k. Yep-any brand-that really screws w/folks. My buddy runs a Come-along in a one ton Dodge-450K so far using a K&N.
