Rebuilt E4OD...Synthetic?
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Senior User
Joined: Jan 2006
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From: Northern California
Rebuilt E4OD...Synthetic?
I purchased an E4OD through a buddy from Ford ($2k) and saved about $400 on the deal. For the price and warranty (3yrs/75k), I could not pass it up. I nursed about 20k miles out of the old one after I started to have problems. What would be the benefit of running synthetic ATF if any?
Post Fiend
Joined: Oct 2003
Posts: 5,903
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From: MICHIGAN
Good deal on the reman, the warranty is what I like about those trannys from ford. The only advantage to syn ATF is it can take the heat without depletling the additive package as easily as dino ATF. I did a rebuild about 6 months ago and installed Syn from the biggining. To early to tell if it makes any difference or not.
Post Fiend
Joined: Oct 2003
Posts: 5,903
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From: MICHIGAN
The cost will be higher for me because I'm still changing it at my neurotic intervals. 15-20K. I really don;t want to drop that much dough again on another tranny & TC. The enigne gets the same treatment. I just wish I could change the rust on the body to some new metal and paint 
as easily as the fluids and filters.... Damn Michigan winters!
as easily as the fluids and filters.... Damn Michigan winters!
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Senior User
Joined: Jan 2006
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From: Northern California
I gotcha Cuda. What about break in? Should I plan on changing the fluid sooner the first time, flush? If this were the case I would use dino the first fill and save $$$. Waddya think?
Post Fiend
Joined: Oct 2003
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From: MICHIGAN
I'm no expert on trannys but I imagine that either will be OK for break in. It's a mainly a matter of cost. I think the common misconception about syn is that syn is slicker than dino and the tranny will not break-in quickly. I like the fact it can take the heat better than dino. Most new cars today are coming from the factory with all syn fluids in everything...at least the hi perf ones are anyway. It's the future.
Senior User
Joined: Jan 2007
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From: Whitewright, Tx
Originally Posted by MTNWOODY
I gotcha Cuda. What about break in? Should I plan on changing the fluid sooner the first time, flush? If this were the case I would use dino the first fill and save $$$. Waddya think?
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Post Fiend
Joined: Oct 2003
Posts: 5,903
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From: MICHIGAN
Gotta love that drain plug. My truck is 4x4 but didn't have adrain plug util I welded one in. No more ATF all over the shop floor 
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