What fluids to use and where can I get them?

From what I hear people are all recommending going with Redline fluids
MT-90 for the manual transaxle
75W90 for the transfer case/rear differential


I was doing a bit of research and found out the MT-90 is not recommended for street use in cold climates. This is what they have to say:

MT-90 - A 75W90 GL-4 gear oil recommended for use in manual transmissions on the track. Provides excellent protection of gears, synchronizers, and bushings at higher temperatures. Not recommended for street use in cold climates.

They offer this as well, but noone seems to be using this:

MTL (manual transmission lube) - a 70W80 GL-4 gear oil for use in manual transmissions on both street and track. Provides excellent protection of gears, synchronizers, and bushings. Shifts well when cold and allows for fast shifts when warm.
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As for the transfer case and rear differential I haven't found any problem with using the Redline 75W90, but just have to find a place that sells it.

 

i got mine at agileauto... but thats a bit far.

 

I'm looking for anyplace that carries it. I'll even order online. I tried a few places already, but they don't seem to have any.

 

MT-90 definitely does shift like garbage in cold climates.

 

ya, i live in so cali, otherwise i would just stick to the stock fluids. as far as availablility, i bought all my redline stuff at summitracing.com

 

There is a SUNOCO station in Arlington VA that carries REDLINE fluids. Check out DCEVOCLUB.com for information and directions.

 

www.myoilshop.com carries all the Redline stuff you'll ever need.

 

FYI: there is a shop in Sterling VA that carries hundreds of quarts of Redline oil including the MT90 and 75w90

O.G. Racing:
22585D Markey Court Sterling, VA 20166 (800) 934-9112 or 703 430 3303

 

So Redline is what everyone would suggest then? If so, I'll be ordering some today. But I would also like to know about how much should I pick up. I didn't find any capacities in the service/owners manuals. Granted having some extra around the garage wouldn't be bad, I just wanna make sure I pick up enough of each to get it done.

 

3.0 qt for manual transaxle
.58 qt for both the transfer case and rear differential

so get a total of 5 qts (3 for MT and 1 each for the TC and Rear Diff)

 

What about Royal Purple? Anyone know which is better?

 

After much research, I decided to use GM Syncromesh in the tranny. The shifting was so much more smooth after. Happy I went with it. As for the transfer, I wanted to buy something off the shelf and not wait to order and the only fluid I found besides the OEM was Mobil 1 75W90 gear oil which exceeds GL5 ratings. Fully synthetic. Once that went it, the driveline noise was lessened. Rear diff is next.

 

used the synchromesh in tranny, and neo syn rhd fluid in diff and transfercase...total cost was about $60 for 3 bottles of synchromesh and 2 bottles of neo syn. shifts a bit smoother now, and not as much noise as before.