[SlowWhite]

So after talking with two guys at work about my car and whats been going on with it.

One of them mentioned that I should probably change my oil with all the rich a/f its possible i was getting blow by and could have mixed some fuel with the oil which would lower the viscosity.

Any rate its a cheap precautionary measure. So my question is what oil and filter to use now a days?

Previous owner said he only ran valvoline vr1 20w 50w. Didn't mention a filter though.

Is this the correct oil to be using? I know ive read that is the correct oil for the hp we put out now adays, but just wanted to verify