tremec 3650 oil questions

[elzuniga327]

hey guys im trying to get this whole fluid type theory straight and i just cant seem to get a solid answer on which oil to use for my tranmission . i just got my tr3650 rebuilt and i just want to make sure i get the correct oil in there. any help is greatly appriciated thanks.

[iudelt89]

I havn't had my trans rebuilt but I just put some royal purple syncromax in. Works beautifully. A noticeable improvement over the stock fluid.

[elzuniga327]

thats what i had after i had my 3rd gear grind but it didnt make a differece after, i was thinking mobil synthetic atf any thoughts?

[j rick kirby]

Originally Posted by elzuniga327

hey guys im trying to get this whole fluid type theory straight and i just cant seem to get a solid answer on which oil to use for my tranmission . i just got my tr3650 rebuilt and i just want to make sure i get the correct oil in there. any help is greatly appriciated thanks.

What did the rebuild cost and what did they do?

[aguerra8907]

I used pennzoil synchromesh and work great

[elzuniga327]

i got a good deal actually (i think) considering most transmission shops wont even touch these, i paid $850 and as far as i know they replaced all synchros and removed all the plastic clips off the forks and made custom aluminum ones (stronger i guess according to the machinst) and just labor (just bench work i took the transmission off myself and gave it to them.

[Mach828]

Nothin like shifting a freshly rebuilt trans

[FenixFallen]

Originally Posted by elzuniga327

thats what i had after i had my 3rd gear grind but it didnt make a differece after, i was thinking mobil synthetic atf any thoughts?

My tranny wasn't rebuilt but I changed my oil in it not long ago, I used the Mobil synthetic ATF and it seemed to work better. Just make sure you put the right amount in, the original owners manual has the wrong amount listed, there was a tsb on it but I forget the amount.

[WNTAMACH1]

3.2 is the correct amount. Most do the wrong thing and fill it to the top.

[WNTAMACH1]

I have mobil 1 ATf sitting at the house waiting to be installed.

[elzuniga327]

i ended up puting the mobil 1 synthetic atf and now im not sure whats going on, i also installed a new ram hdx clutch and it makes like a grind noise when i let off the clutch and even as im driving i dont know what it could be. new clutch or tranny?

[Mach916]

the tranny calls for dexron III.. people just make me laugh

[XSELLR8]

Originally Posted by WNTAMACH1

I have mobil 1 ATf sitting at the house waiting to be installed.

YEP! Mobil 1 full synthetic ATF (AUTOMATIC TRANS FLUID). Some people substitute one quart of lucus transfix if the transmission is old, but my transmission was rebuilt too, and that stuff is too thick for a newly built trans IMO.

There has been a lot of discussion about NOT putting in the syncromesh or full synthetic because it is too slippery for the carbon fiber, brass, and card board found inside the transmission, but I had horrbile lock out issues running non-synthetic fluid with with lucus transfix. My transmission only shifted smooth after the mobil 1 full synthetic ATF without the lucus transfix.

3.2 Quarts Mobil 1 full synthetic ATF my friend.

[elzuniga327]

i went i head and went with my first gutt feeling ( mobil synthetic atf) and i love how it shifts, i just dont understand why the darn things has like a grinding sound when i let off the clutch. or could it be normal for a ram hdx clutch?

[WNTAMACH1]

Originally Posted by XSELLR8

YEP! Mobil 1 full synthetic ATF (AUTOMATIC TRANS FLUID). Some people substitute one quart of lucus transfix if the transmission is old, but my transmission was rebuilt too, and that stuff is too thick for a newly built trans IMO.

There has been a lot of discussion about NOT putting in the syncromesh or full synthetic because it is too slippery for the carbon fiber, brass, and card board found inside the transmission, but I had horrbile lock out issues running non-synthetic fluid with with lucus transfix. My transmission only shifted smooth after the mobil 1 full synthetic ATF without the lucus transfix.

3.2 Quarts Mobil 1 full synthetic ATF my friend.

I'm only using the Mobil 1 ATF as well.

[4a7191a]

im using the secret sauce of the old school a hole thats banned from here. mobil1 and lucas. works well, shifts like butter.

[006]

Most of the TR3650's came with Mercon V from the factory.

Later on Ford found that it was a huge mistake, and this is the result:

http://www.stangnet.com/images/stori...s/04-15-06.pdf

btw, XT-2-QDX = Mercon/Dexron III

All other fluids are too slick for the synchros, what you want is Mercon/Dexron III

[elzuniga327]

thanks so much im definatly going to print that link and show it to the guys who rebuilt my tranny. this issue is only getting worse and louder

[ab_mach1]

Originally Posted by WNTAMACH1

3.2 is the correct amount. Most do the wrong thing and fill it to the top.

By filling to the top, does that end up being less than 3.2qts?

[XSELLR8]

Originally Posted by eruza

By filling to the top, does that end up being less than 3.2qts?

No, if you fill it to the top it will be close to 4 qts.

Remove the shifter and pour it in the top of the trans from there (easiest and cleanest way). Just make sure the plastic cap/cup on the bottom of the shifter comes out with the shifter, and goes back in! My buddy left the cap out on his Bullitt (also has the TR3650) and it had issues shifting until I realized he left it out, then it was smooth after we put it back in.

[ab_mach1]

Cool, thanks!