Thread: what will 1 quart of the wrong tranny fluid do?

Results 1 to 3 of 3
  1. #1 what will 1 quart of the wrong tranny fluid do? 
    SE Level Member
    Join Date
    Aug 2021
    Location
    New Jersey
    Posts
    8
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Chats
    0
    I have to assume it's the wrong fluid, but very likely a type for an old gm vehicle I uswd to own.

    Tranny started shifting hard about a year ago (1998 GP GT). Currently 190k. I basically kept it near home, changed fluid and filter, no change. Still runs pretty fine, it just hesitates between the last 2 gears. Up to 40mph it revs beyond 20000rpm. Between 45 and 40 it gets closer to 30000. Then shifts. Not a lot of thumping, but I don't fo far. You can nearly always smell burning tranny fluid to some degree.

    I'm about to put a quart of Lucas Trans fix, but couldn't pump out some with my hyper tough drain pump. Maybe I had the tunes mixes up lol.

    Anyway the Lucas may just prolong the agony. Not even sure if I should bother, as I giving serious thought to pulling the tranny out of a Venture I habe with a bad motor. But was wondering if I pulled out an addirional quart, and dumped the pennzoil fluid with the missing label in, is there a possibility I'd make things much worse? Or just regular worse? Or no change at all.

    The fluid tjat's in there doesn't look new anymore. It's nowhere near hershey"s syrup but it ain't candy apple red anymore.
    Reply With Quote  
     

  2. #2 Re: what will 1 quart of the wrong tranny fluid do? 
    GrandPrix Junkie
    Join Date
    Oct 2009
    Location
    St. Louis
    Posts
    4,724
    Thanks (Received)
    18
    Likes (Received)
    75
    Dislikes (Received)
    0
    Chats
    0
    The trans originally called for Dex III. I've replaced my trans and used Dex VI and have had no issues other than high mileage. If you keep it in "3" does it seem to shift ok? If it shifts ok try bumping the shifter into "D" once you are over 45mph sustained. Based on what you posted it sounds like the 4th clutch hub might be toast.
    Reply With Quote  
     

  3. #3 Re: what will 1 quart of the wrong tranny fluid do? 
    SE Level Member
    Join Date
    Aug 2021
    Location
    New Jersey
    Posts
    8
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Chats
    0
    I tried that today. I cam't say nothing has changed, but nothing is fixed. The car seems to rev higher, not quite 30k rpm, when between 40 and 45. The last shift up to 50 doesn't cause it to go as high as before. Mayne only a little above 20krpms.

    To me ot seems fluid isn't circulating the way it's suposed to. Sometimes turning the car off for a minute then driving again registers an improvement. It would suck if this were a real simple problem and I was just too obtuse and just assumed it couldn't be fixed.

    No one has tried to answer my original question though.
    Reply With Quote  
     

Similar Threads

  1. checking tranny fluid
    By vandezand in forum General Tech Discussion
    Replies: 2
    Last Post: 03-20-2013, 09:34 PM
  2. Tranny fluid disappearing?
    By jokyfo in forum General Tech Discussion
    Replies: 7
    Last Post: 10-27-2010, 09:07 AM
  3. Synthetic Tranny Fluid
    By mikesarebetter in forum 1997-2007 4 speed Automatic (4T65E) (4T65E-HD)
    Replies: 4
    Last Post: 10-30-2009, 09:01 PM
  4. What Tranny Fluid should I run?
    By Iron Indian in forum 1997-2007 4 speed Automatic (4T65E) (4T65E-HD)
    Replies: 75
    Last Post: 01-15-2009, 01:24 PM
  5. tranny fluid change ?
    By NEONNIGHT34609 in forum 1997-2007 4 speed Automatic (4T65E) (4T65E-HD)
    Replies: 1
    Last Post: 12-19-2008, 09:48 AM
Tags for this Thread

View Tag Cloud

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •