To get rid of what appears to be piston slap, I put in 4qts mobil 1 10/30 synth, and 2 qts mobil 1 15/50 synth. I cant seem to get a hold of 10/40, so this is what I came up with. Got rid of the K&N air filter as well. It def quieted it down, and it runs a lot smoother. Any probs doing this on a regular basis, and keep on doing this for the winter? What would be my final weights after this synthetic mixture?
2000 XJ
132K
regards
JH
2000 XJ
132K
regards
JH