I‘ve been looking into Lucas and Lubegard‘s products. I have a rebuilt AT with 100,000 miles since the rebuild. It runs fine. The fluid is a little dark and smells burnt, but it‘s also 35,000 miles since my last fluid and filter change, and I‘ve been doing them since the rebuilt every 33,000 miles. Last fluid change 35,000 miles ago, they said the pan was clean as a whistle. So I was thinking since I‘m getting up there in milage since the rebuilt, that an additive like Lubegard or Lucas to the AT might be a good preventive measure at this stage?
Do not dump goofy automatic transmission additives in a newly re-manufactured transmission. The dealer of the car does not use aftermarket crap in any of their transmissions before or after dealer fluid and filter changes.
NO!!!! dont do it. automatic transmission fluid is the only thing that should be in your transmission any of those additives are a scam or will mess your fluid up.
Just one man's opinion but if you've gotten 100k on that rebuild why argue with success? Most additives are never as effective as claimed, its marketing, marketing, marketing. If the fluid is darkened now do what you've been doing and change it without the additive. You've already gotten more miles out of a rebuild than most ever do.
