Quote Originally Posted by MSHardeman View Post
My question now is; is it OK to mix grease? The inner CV joint has grease in it already, but I want to pack my existing green cup with grease to make up for the bit that was lost to the new green cup. Is it OK to just add the synthetic bearing grease that I have to the grease that is already there, or should I clean the new joint out completely and re-pack with one type of grease?
Ask anyone who sells grease (like Mobil1) and the answer will ALWAYS be "NO!!". Of course, they want to sell you new grease. Will it work? Probably. Will it hurt anything? Maybe...maybe not. I'm just guessing it depends on what the two greases are. Are they the same weight? Type (Dino vs. Synthetic) Color? (Some people don't like their food to touch, so maybe they don't like their grease to touch either.) I guess you'll have to make up your own mind.