I have found that if you can heat The NON-PETROLEUM cleaners they work Much faster. I use stuff that may very well be the same.Called Purple stuff which i heat And it cleans Much faster when I Use Hot Water alone with it. For that Matter It tells you right on the Bottle not to use on a hot motor It will Take the Paint Off if the Motor is Hot. But works Great on the Grease Hot

hope this helps }[oooooo]