Have been running Schaeffers semi-syn., 5-30 in a 95 Toyota 4-Runner 92K, and also in a 95 Escort with 192K. Both engines are clean and quiet. Tried 5-30 Mobil 1 but had some slight upper valve area sounds in the Escort so went back to Schaeffers and the sounds went immediately away.
Seems like Schaeffers also offers a full synthetic now but have not tried it and am going to continue with the semi-syn.
Seems like Schaeffers also offers a full synthetic now but have not tried it and am going to continue with the semi-syn.