Yodub, I can predict your future, you will be shoping for a new/rebuilt tranny soon. You want to use th right fluid in there. Motor oil will work, but should only be used briefly. I have used Redline MTL for about 4 years now with good results. I am told that it will lead to prematrue synchro wear, but I have not noted any problems. I thought the tranny fluid was supposed to be changed like every 35k.