Hi Guys, I've scouted around for a clear cut answer but mostly end up where I started.
I recently bought a 2002 fielder 1zzfe fresh import. It didn't come with an owners manual. As far as I can gather 5w -30 is the recommended oil grade to use, but I don't know what grade is in there already.
My question: What is the correct grade for this engine and would it be a major if I add new oil to the old if the existing oil is a different grade?
Hope that makes sense.
( Oil change would be ideal I know but no time at the moment)
Thanks.