V2Rocket

Hi all,
I know there are other threads asking about trans oil but I am wondering if there is other input to be had.

I have an '86 951 transmission with cooler loop, open diff, that is getting tired in the synchro department.

It's been a few years since I changed the oil in it and IIRC it is Lucas 85W90 or something like that.

I bought the trans with ~100k miles on it and I'd say I've added another ~40k to it. Is there a particular brand/weight/type of gear oil that would help the synchros out and keep things smooth at this age?

67King, I know you have some offerings, care to make a recommendation?

Van

I've been happy with the Mobil 1 Delvac I get from Lufteknic. http://www.lufteknic.com/Merchant2/m...ode=lubricants

User 52121

Based on the recommendations I've read here, I've been using the Redline MT90. Seems to work fine. *shrug*

One thing I know my trans DIDN'T like was the Royal Purple.

Crazy Eddie

Old School
Swepco

David Floyd

Antonio

I've been racing with Red Line in the tranny for over 10 years. I swear by the stuff.

Paulyy

don't know what was in it. but go motul in it now. works fine

fejjj

Swepco

URG8RB8

Swepco especially when free from Crazy Eddie's stash!!! Also recommended to me by Chris White.

raleighBahn

Swepco 201

gruhsy

Swepco 201 or 203

rlets

MT-90 here, working good.

mikey_audiogeek

Castrol Syntrans Transaxle 75W90

mikey_audiogeek

A.K.A Castrol Syntrax Universal Plus
https://www.ils.co.nz/ils/assets/dow...DS/3373869.pdf

dmcampbell

Redline MT-90. Used to use Swepco, but much smoother shifting with the Redline.