quote:Originally posted by zoomzoom:
Wich one has greater impact on engine wear oil or air filter?
Absolutely air filter. Uoa's show little difference between decent quality oil filters.
An ill fitting air filter or poor quality filter media can suck in all kinds of contaminants that will cause wear.
Air filter for sure. It has by far the harder job. Incoming air is chock full of dirt of all sizes which needs to be removed.
In contrast, engine oil in a modern engine in good condition has relatively little contamination to deal with in the first place.