Just dumped a 1/2 quart in today. Hope it works! From the sound of the other forum he had luck with MMO loosening the rings on his motor. I figure it is worth a shot, It is not any good the way it is. I have talked to a lot of people who swear by the stuff. The only thing I am not sure of is using Shell Rotella 5W-40 synthetic. I know I have read on here where some have been using it since VX was new. But I don't think I want too use it, I think I will stay with Castrol for now and see if consumption improves with MMO.