transmission service question

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transmission service question

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Blazer >> Mechanical & Maintenance >> Engine & Transmission >> transmission service question

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transmission service question - 12/8/2007 7:16:23 AM

shrike96

Posts: 12
Joined: 12/20/2005
Status: offline

I recently changed my tranmission oil and filter. Beforehand the transmission seemed ok but after it seems like the brake is on. It runs fine but it did drop 2 mpg 18 vs 20. I am wondering if it is just the new fluid or perhaps there is a leak at the little seal where the tranmisioon filter goes. I did not replace the seal, just pulled the old filter old and popped a new on in. Should i go back in a replace it. Do i reall y have anything to worry about? Thanks for another view.

Post #: 1

RE: transmission service question - 12/9/2007 1:18:14 AM

Chevy Lover

General Tech Moderator
Posts: 3411
Joined: 6/11/2006
From: Vancouver. B.C. Canada
Status: offline

I always recommend replacing the seal when the filter is replaced but I doubt that's your fuel milage problem.
If you've dropped 2 mpg perhaps it's due to the weather, it's colder now and the engine will run rich longer til it has time to warm up.

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(in reply to shrike96)

Post #: 2

RE: transmission service question - 12/9/2007 5:18:26 AM

shrike96

Posts: 12
Joined: 12/20/2005
Status: offline

I didn't replace the seal because actually i didn't realize that there was one in there. The drag effect seems more like the transmission is just tighter feeling, although there was a noise on accetaration that i thought was valve noise that has gone away with the fluid change. Perhaps the tranmission is sounding like it should be. I have about 222,000 miles on the truck now while i put on about 110,000 of those my self. This was the first ti,me it was changed since i got it.

(in reply to Chevy Lover)

Post #: 3