Quote from: Colorado-SHOBro on April 19, 2018, 11:21:14 AM
Quote from: BJSHO on April 19, 2018, 10:48:32 AM
I had my transmission flushed on my 2010 at my trusted shop... unfortunately they used a "high quality" non-brand name synthetic (lv) fluid. There is a post about it somewhere...
In any event, the transmission did not shift clean when tuned at WOT until I did 3 x drain and fills with Motorcraft Mercon LV...then everything was happy... It was even cleaner with an extra half quart of fluid per LMS recommendations.
Just my experience...
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This is why no one puts a wrench on my car but me. Even reputable "trusted" shops make mistakes or get careless. Only other people to do any work on my car has been a very close friend of mine did an alignment and the dealer has had the car twice for warranty work.
At any rate the amsoil trans fluid gets here today and i plan to use it tomorrow. I trust amsoil but also think there's some validity to ford tech makuloco's statement about OEM manufacturers having very specific additive packs to their trans fluids these days. I'm sure amsoils fluid match and exceed those requirements but it's still somewhat of a universal fluid vs the lv being specific to ford.
If there's any funny business after the flush i can still flush back to mercon lv if need be.
Can anyone who is running amsoil trans fluid in their 6f55 speak on behalf of their experience?
I switched out my fluid to Amsoil at 25k with the entire flush on the BG machine in mid 2012. When I took the car out I could not believe how smooth the trans shifted and was not at all expecting that. My secondary thought afterwards was 'what the hell took me so long'.
I believe that the "special" additives in the oem fluid is more to get you to use their stuff and also to scare you about warranty claims; basically a training the brain gimmick so you continue to use after warranty as well. The idea being if your car hasn't blown up after 60k, the fluids must work the best so I might as well keep using it.
Amsoil (and other) is in the business of oils and specialize in that. Ford is not. I'm at 83k on that same fluid and haven't topped it off either since its full. I'm getting ready to do it again this spring sine I think its overdue. That's the thing about top quality fluids, you can go longer intervals. To date, no trans problems noticed at all.