Best tranny fluid for cold conditions?

SON240sx Automotive
1

Maybe a stupid question, but what’s better for cold conditions? Got in my car today and had to force the shit out of the tranny to get it in gear (NOT my clutch or anything else). It was cold (the oil) and therefore thick as shit when I put it in, and I’m guessing since its 3x colder outside tonight, that’s the culprit.

So… Tomorrow, when I change it, what should I change it to? Synthetic? How low is too low for viscosity? Need some help here.

2

it will usually do it

just double clutch second and is shood be fine after that

3

But theres nothing else I can do to avoid that? I’m lazy and it’s pretty damn tough when its cold, I don’t want to shit on my synchro’s or something

4

In my daily driver I have 90w140 motomaster gear lube (sorry I can’t care to put expensive shit in my daily) which works great but on really cold days the oil gets thick and two things happen. First is the shifter is hard to push into gear, but that’s not a big problem since after you drive for a few km it warms up the fluid and it moves fine again. The more annoying thing is that when I clutch in, start my car, and then release the clutch the motor stalls because it doesn’t have enough power at idle to spin tranny gears through the thick transmission fluid. I have to sit there with the clutch in and then rev it a bit as if I’m starting in first but in reality just to get it to engage into neutral and then after a few seconds of giving it a little bit of throttle the fluid thins out and it can hold it on its own. I’ll put 75w90 for the winter next time.

5

Royal Purple Synchromax or Max Gear Oil

http://www.royalpurple.com/manual-transmission-fluid.html

http://www.royalpurple.com/manual-transmission-fluid.html

75W90 - Best All Round with our Cold Canadian Winters

6

im using redline mt90 … works good in cold weather …

7

manufacturer recommended oil…

8

the mt90 stuff is basically 75w90 (which is manual recommended) GL4 tranny fluid… I put that in my 240… cant really comment good or not, expensive yes, it works and is to spec i guess thats all. Their 75w90 regular stuff is GL5 which you want to avoid in our car’s tranny, it eats yellow metals (brass synchros in our cars…)

9

mt90 for a street car

maybe shockproof or something heavier from another co. for racing / pro drifting

10

Redline or Royal Purple 75w90 are amazing cold or hot.