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What should I do?

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Old Sep 13, 2011 | 12:23 AM
  #1  
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What should I do?

Okay.
I bought my expy at 166000 miles, and today she has 218700 miles.

I changed the trans fluid and filter in it at about 175000 miles due to tons of slippage. Changed the fluid and filter, and no more problems.

Lately I noticed some slippage again, and my dealer sold me a small bottle of the Friction Modifier for rear-ends.. He said put that in there, and it should hold me over.. When it starts slipping again, just buy another bottle.

I'm not going to keep buying bottles of that stuff. He said at that many miles, I should drain my fluid, filter it out, and put the old back in.

However, I don't see why it wouldn't hurt to change fluid and filter. and put new fluid back in.. The dealer said something about clutch wear, and the new fluid wouldn't have the thickness or something other.
 
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Old Sep 13, 2011 | 01:54 AM
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The handwriting is on the wall, you need a tranny rebuild. All of this other stuff like thicker fluid and friction modifier is just delaying the inevitable.
 
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Old Sep 13, 2011 | 01:59 AM
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A rebuild sounds like a good idea.
BTW how is the truck running overall, did you get it
To run smoother?
I know a 2000.00 rebuild is a hard pill to swallow.
 
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Old Sep 13, 2011 | 02:02 AM
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Truck runs perfect. In the process of selling it however.

The slippage isn't really noticed, just when going uphill, and turning to the left at the same time, and high rate of speed. It acts like slips, but after it does that, it goes the gear below whatever it was in.

It's hard to explain.
Like rough shifts, etc.
 
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Old Sep 13, 2011 | 07:12 AM
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The tranny likes new fluid every 30k, with what you've already seen at the very least should be hitting that interval. You're about 50% over that right now.
 
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Old Sep 13, 2011 | 08:45 AM
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Called and ordered the filter and fluid. Should be here in the next hour.
I always thought ford was setup every 70K miles.. Guess I was wrong on that one.
 
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Old Sep 13, 2011 | 11:03 AM
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Are you using a procedure that flushes the whole system and the TC?
 
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Old Sep 13, 2011 | 09:15 PM
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Originally Posted by alwaysfords41
Are you using a procedure that flushes the whole system and the TC?
No. sure aint.. Why?
 
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Old Sep 13, 2011 | 10:18 PM
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Originally Posted by LeeLeadingham
No. sure ain't. Why?
Because doing a drain and replace only gets out about 1/2 the old fluid. A flush will get it all out.
 
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Old Sep 14, 2011 | 07:37 AM
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Originally Posted by LeeLeadingham
No. sure aint.. Why?
Because it's the right way might be one reason. It may save your transmission may be another good reason.

With your disregard for the intervals and the troubles you are experiencing it is probably much more important that you get it all out and do it right. Based on the 166k miles on it when you bought it, and assuming you did the last fluid change, at least half of the fluid you are using has 52k miles on it. And that's only true if the former owner serviced it just before he sold it to you which is unlikely. Could be the best $200 bucks you spend to have a dealer do it if it saves you $2-3k on a rebuild. There are also procedures in the forums here that will get you completely drained if you want to do it, but it is more involved than dropping the pan.
 
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