When I was changing air filter I noticed, what seems to be oil in the air filter housing. My car has been running sluggish lately. Recently the engine temp light came on but my mechanic said he didn't find a problem. Also the a/c doesn't seem to be very cool. What could possibly cause oil in air filter housing?
My car has 160000 miles.
My car has an automatic transmission.
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing