**Paging DAP** Why would Jason@STaSIS send a gallon of Redline 75W90 GL-5 with my rebuilt tranny?
10-14-2005, 12:23 PM
#51
No, the audi OEM fluid is Castrol TAF-X which is a GL4/5 fluid. The VW 501.50
rating which is one of the requirements for an OEM fluid is basically asking for a GL-4 fluid with GL-5 protection without the corrosives.
Thus when selecting a gear oil, you want to find a GL4/5 fluid.
Castrol TAF-X is one,
Motul MotylGear 75w90 is another
Motul Gear 300 75w90
Royal Purple Max Gear 75w90
SF MTL-R 75w90
All of those are available in the US. Redline does not make a GL-4/5 fluid. MT-90 is a GL-4 thus you'll be losing the EP (extreme pressure) protection of a GL-5.
www.purems.com carries both Motuls, you just have to call for the Gear 300. The royal purple is way too thick @ 40deg cst. and users have reported cold shift issues at 70 deg F ambient. I've put 100 mi on my SF MTL-R so far and am loving the shift feel over stock.
As for my recommendation, go Motul. Easy to get, and I don't have to explain anything about it.
Dave
Thus when selecting a gear oil, you want to find a GL4/5 fluid.
Castrol TAF-X is one,
Motul MotylGear 75w90 is another
Motul Gear 300 75w90
Royal Purple Max Gear 75w90
SF MTL-R 75w90
All of those are available in the US. Redline does not make a GL-4/5 fluid. MT-90 is a GL-4 thus you'll be losing the EP (extreme pressure) protection of a GL-5.
www.purems.com carries both Motuls, you just have to call for the Gear 300. The royal purple is way too thick @ 40deg cst. and users have reported cold shift issues at 70 deg F ambient. I've put 100 mi on my SF MTL-R so far and am loving the shift feel over stock.
As for my recommendation, go Motul. Easy to get, and I don't have to explain anything about it.
Dave
10-14-2005, 12:34 PM
#53
AudiWorld Super User
That was the Series 2000 gear oil.
I agree that didn't work out well in our transmissions. They stopped making that in favor of the 2 new products they have now MTG for transmissions and SVG severe gear for differentials.
10-14-2005, 12:36 PM
#54
Some proof for the disbelievers that Castrol TAF-X is the OEM gear fluid.
Don't feel bad . . . Lotus uses it as OE as well.
Dave<ul><li><a href="http://no.servicebooking.net/castrol/lubetable/audi_retail.asp?lang=no">http://no.servicebooking.net/castrol/lubetable/audi_retail.asp?lang=no</a</li></ul>
Dave<ul><li><a href="http://no.servicebooking.net/castrol/lubetable/audi_retail.asp?lang=no">http://no.servicebooking.net/castrol/lubetable/audi_retail.asp?lang=no</a</li></ul>
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