Ben,
After my recent tranny rebuild, I was talking to my tranny guy about the stuff. He gave me his thoughts about it and loaned me his latest issue of Transmission Digest which talks about the additive. From the information I read, it looks like really hot stuff. Really aids conventional fluid in lubrication and resistance to breakdown. My tranny guy uses it in all of his rebuilds (in combination with a good dino ATF) and has never had any problems from the mix. He gave me a bottle to add after my 500-mile break-in period, but I have elected not to use it right now since I'm already using Mobil 1 synthetic ATF.
From what I can tell, **** Guard is some of the best stuff on the market. I don't have personal experience with it, but I have to agree with Mr. Yeager. It can't hurt to use it any, especially if you're doing a flush and/or using conventional ATF. thumb
<small>[ November 15, 2003, 07:49 AM: Message edited by: Axianator ]</small>