MMO is not about science MMO is about magic and faith. You should put in the
amount based on what you "feel" the van needs.

I do not avocate using MMO in the oil at ALL. The only exception is briefly
before you do an oil change to help clean out the engine. I believe that
synthetic oil is the best there is in the oil dept. and when you put any oil
additive into your crank case you are messing with the stability of your oil.
If there was anything better out there they would have it in oil. It is a
very competitive market!

MMO is best used in the gas for "upper cylinder" lubrication. I put a few
ounces in every time I fill up.

Todd Thompson
84 westy
Washington DC