here is maybe a dumb question...but i currently have 5w20 in the car if i top off w 5w30 does it make 5w30 less effective or dilute its thickness for lack of a better term?
Ok, i chaged the pcv (old was filthy) changed the plugs..(not too bad but needed changing per mechanic) and air filter,(need it) and he topped off with 5w30..and we will keep monitoring...
Originally Posted by john_chicago
Ok, i chaged the pcv (old was filthy) changed the plugs..(not too bad but needed changing per mechanic) and air filter,(need it) and he topped off with 5w30..and we will keep monitoring...
Good for you! Forgot to mention the PCV. Caused my oil consumption once.
Unless there's an undetected leak I don't think your engine should be using oil at 85k. I would check pcv then use an engine flush treatment and after that a steady diet of 5w30 synthetic of your choice.