Do not run that car like that long, the SeaFoam works great but it thins the oil.
+1 from ~JM~ A better solution is to run 20/50 oil with a quart of Marvel Mystery Oil. You'll need a ZDDP supplement as well( with every oil change ) if you are not running a roller cam.
+1 from ~JM~ A better solution is to run 20/50 oil with a quart of Marvel Mystery Oil. You'll need a ZDDP supplement as well( with every oil change ) if you are not running a roller cam.