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A How To: changing manual transmission fluid

Old 05-29-2017, 09:26 PM
  #151  
Stoenr
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Did mine today following the write up, thanks! And wow, night and day difference!! Shifting like it use to! Wish I didn't put it off for like 2 years! 75k and that fluid was pretty freaking nasty!! Went with the same RP.
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Old 06-01-2017, 05:10 PM
  #152  
bl817
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good luck with the RP. I do love it in everything else except my TR3650, went with Mobil1 instead. I read a lot that it ate the synchros. fill the trans to the top plug. 3.2 quarts. I know an argument is going to ensue but Tremec moved the fill hole on these to make sure you fill till full, not 1/2" lower. 3.2 quarts of your chosen oil will be at the hole. good luck
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Old 06-01-2017, 10:27 PM
  #153  
flash_xx
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I just did mine a few days ago. Used Motorcraft Mercon V ATF, buttery smooth, but this is my second change in 50K miles. With the track use I'd rather play it safe and change it regularly. I actually measured 3.2 quarts before putting it in and it didn't reach the fill hole and I made sure to empty the container completely. I put my pinky in the hole and the tip touched the oil, so maybe 1/4 inch below the fill hole. I don't think you have to be that exact, just don't let it flow out of the fill hole. I had access to a lift so the car was perfectly level, maybe that's why some people get different results.
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Old 06-02-2017, 07:04 AM
  #154  
Norm Peterson
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Originally Posted by bl817 View Post
fill the trans to the top plug. 3.2 quarts. I know an argument is going to ensue but Tremec moved the fill hole on these to make sure you fill till full, not 1/2" lower. 3.2 quarts of your chosen oil will be at the hole. good luck
Not to argue, but I know when I changed the fluid in mine that 3 full quarts plus 4 fluid ounces was barely up to half an inch down from the hole. Not quite another 4 fl oz put the level just above half an inch down, so I called it good (and have done several track days since with no evidence of either under- or over-filling it).

But a couple of thoughts . . .

First off, I suspect that there is some variance in the internal volume from one TR3650 to another. No idea how much, though.

Is it possible that some people actually do have a transmission with the higher fill hole while others have the lower one? If Tremec did in fact move the fill hole, it sure sounds like it was a running production change on their part with none of us knowing when it happened or how many units shipped with the 'early' hole location.


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Old 06-04-2017, 07:43 PM
  #155  
flash_xx
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What oil did you use Norm?
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Old 09-28-2018, 01:03 PM
  #156  
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I know this is a dead beast horse and a massively old thread. But I used this today to change the fluid on my bullitt. I modified it in one way. I didn't do anything with the stick shift. I went and bought a gallon pump weed sprayer to do the transfluid. It's sooooooo much easier. I used royal purple synchromax, and we'll see how it does. Took it around the block. I wasn't experiencing anything wrong before the change, so no rough shifts, grinds etc. The shifter got a little warm in city driving but I'm more than sure it was the catless H pipe causing heat. It goes back cool on the highway. So for the peeps doing this just follow the steps in the original post and instead of running a hose from the inside to the fill plug. Just get a weed sprayer, it's sooooo much easier.
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