how often do you guys replace the tranny oil?

[otto_kretschmer]

standards, not magic boxes

I'm putting between 35 to 40k miles on my 86 944 with all the commuting I do and trips to Arizona

it looks like I'll have to do the belts once a year now with all this driving

so what about the tranny?

should I replace the tranny oil when I do the belts?

[Gawernator]

Every 60,000 miles. Redline MT-90 GL-4 rated all the way.

[Chunkerz]

GM Syncromesh is my choice for gear oil. It is the best stuff on earth.

[Gawernator]

Lies. Redline MT-90 = Best stuff on Earth

[mueller944s2]

Originally Posted by Gawernator

Lies. Redline MT-90 = Best stuff on Earth

The only way to go! Always MT-90

[Gawernator]

Exactly.

[pfarah]

I replaced mine twice in six months. First time to just get rid of the tar I found (it appeared that it may have been the original lube sitting in there for 99k miles and 28 yrs) by using Valvoline 75/90 oil. After extensive research on this and other forums, I decided to change the oil a 2nd time (after @900 miles) with Red line MT-90. What a difference it makes with shifting! No more double clutching as she shifts very smooth, even in freezing temps. Red line is a superior product in my humble opinion.

[CHICKS]

Originally Posted by Gawernator

Lies. Redline MT-90 = Best stuff on Earth

This ^ . Ive only done mine once since buying it in 2009, no idea how many miles I have, cant get the odo to work .It wont hurt anything to change it at every belt change, it's just money and oil.

[VirginiaF1]

redline Mt dash 90 every 35,000 miles ..
the manual says every 60k but I accelerate that recommendation based on my 256,000 miles now

[smokin_944]

I'm going out on a limb here. I use AMSOIL 75W-90 and I change it every 35,000 miles. works for me...

[ernie9944]

Originally Posted by smokin_944

I'm going out on a limb here. I use AMSOIL 75W-90 and I change it every 35,000 miles. works for me...

Same here I use Red Line which will be change every 30k/35K miles.

[RedBaron]

Redline MT90 every 30k miles. It also has the proper additives for LSD transmissions.