About a month ago, I bought my daughter and son in law a 1997 Oldsmobile Van. Van has 118,000 miles on it. Changed Transmission filter and three quarts of fluid a little over a week ago and now want to do a general flush and exchange of all tranny fluid. I was just reading on the Marvel Mystery Oil website that MMO can be used in automatic transmissions at a maximun of 16 oz per tansmission fill, (in other words, no more than 16 oz). Has anyone ever used MMO in their transmission before? Did it do a good job of cleaning. Transmission on van is giving me no problems, but I thought now would be a good time to clean it out so to speak so it gives good long service for my daughter and son in law and their little kids.