Redline MT90 for transaxle? |
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Redline MT90 for transaxle? |
mittelmotor |
Jun 20 2012, 10:30 AM
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#1
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Member Group: Members Posts: 334 Joined: 21-May 12 From: SoCal Member No.: 14,464 Region Association: None |
I've used this stuff before in other cars and have been impressed. Anybody running this? Is it a good fit for the 901 transaxle?
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SirAndy |
Jun 20 2012, 11:15 AM
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#2
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Resident German Group: Admin Posts: 41,617 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
I've used this stuff before in other cars and have been impressed. Anybody running this? Is it a good fit for the 901 transaxle? Do a search here, this has been discussed ad nauseum. The general consensus is that the older Porsche transmissions, including the 901, have syncros that need more friction to work properly and modern synthetic oils just can't provide that. Any good ole dino oil should do. Personally, i like Swepco 201. And be prepared for some heated comments here shortly, since talking oil is right up there with religion, politics and the /6 vs. /4 debates. (IMG:style_emoticons/default/hide.gif) |
mittelmotor |
Jun 20 2012, 11:20 AM
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#3
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Member Group: Members Posts: 334 Joined: 21-May 12 From: SoCal Member No.: 14,464 Region Association: None |
I've used this stuff before in other cars and have been impressed. Anybody running this? Is it a good fit for the 901 transaxle? Do a search here, this has been discussed ad nauseum. The general consensus is that the older Porsche transmissions, including the 901, have syncros that need more friction to work properly and modern synthetic oils just can't provide that. Any good ole dino oil should do. Personally, i like Swepco 201. And be prepared for some heated comments here shortly, since talking oil is right up there with religion, politics and the /6 vs. /4 debates. (IMG:style_emoticons/default/hide.gif) Thanks for the input. That sort of mirrors my philosophy for engine oil....good quality dino, change it often. |
Downunderman |
Jun 20 2012, 01:42 PM
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#4
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Senior Member Group: Members Posts: 852 Joined: 31-May 03 From: Sydney, Australia Member No.: 766 Region Association: Australia and New Zealand |
What Andy said, eveyone is a zealot. My preference is Motul FF-LSD synthetic.
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mittelmotor |
Jun 20 2012, 04:24 PM
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#5
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Member Group: Members Posts: 334 Joined: 21-May 12 From: SoCal Member No.: 14,464 Region Association: None |
What Andy said, eveyone is a zealot. My preference is Motul FF-LSD synthetic. Yes! Doing my best to stay away from the "Originality and History" section...some nasty fights there. (IMG:style_emoticons/default/stirthepot.gif) |
Randal |
Jun 20 2012, 06:00 PM
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#6
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Advanced Member Group: Members Posts: 4,446 Joined: 29-May 03 From: Los Altos, CA Member No.: 750 |
I've used this stuff before in other cars and have been impressed. Anybody running this? Is it a good fit for the 901 transaxle? Do a search here, this has been discussed ad nauseum. The general consensus is that the older Porsche transmissions, including the 901, have syncros that need more friction to work properly and modern synthetic oils just can't provide that. Any good ole dino oil should do. Personally, i like Swepco 201. And be prepared for some heated comments here shortly, since talking oil is right up there with religion, politics and the /6 vs. /4 debates. (IMG:style_emoticons/default/hide.gif) +1 Once you go Swepco 201 you never go back (IMG:style_emoticons/default/biggrin.gif) |
Richard Casto |
Jun 21 2012, 07:16 AM
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#7
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Blue Sky Motorsports, LLC Group: Members Posts: 1,465 Joined: 2-August 05 From: Durham, NC Member No.: 4,523 Region Association: South East States |
Two things...
1. You will have a few people on this forum who will come out of the woodwork who will swear by MT 90 in the 901. It can quickly turn into a flame war. (IMG:style_emoticons/default/screwy.gif) But... RedLine MT 90 is not GL-5 spec and if you look at their own literature, they don't recommend using it on transaxles with hypoid gears such as the Porsche 901. If you are set on using something from RedLine then look at their "75W90 NS" product. Here is the product page for it... http://www.redlineoil.com/product.aspx?pid=47&pcid=7 If you read the info on that page, you will see they hit the high points regarding GL-5 for our hypoid R&P gears, proper friction modifiers for synchros, etc. You can find mention further down about not using MT 90 in our application. 2. It is a synthetic. They tend to be a bit more slippery than traditional mineral/dino lubricants. So they probably work great with modern Borg Warner synchro design, but not as good with the older Porsche synchro design that requires decent friction to work right. As always your mileage may vary. I personally wouldn't be afraid of giving their 75W90 NS product at try as maybe they got the balance right between synthetic slipperiness and their friction modifier package. I personally would absolutely not use MT 90 however. If you care to read it, I have this article on my website about lubricants... Transmission Lubrication Richard |
ape914 |
Jul 27 2012, 05:07 PM
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#8
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red locktite Group: Retired Members Posts: 240 Joined: 7-February 11 From: In front of a computer Member No.: 12,676 Region Association: None |
redline did wonders in my 901 tranny, it was the stuff specific for this tranny, but redline has changed the name since then. tranny was diffuclt to shift, and thought to be shot, switched to redline and 70,000 miles later still good. I have it in several of my air cooled cars.
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neilca |
Jul 28 2012, 06:08 AM
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#9
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Member Group: Members Posts: 98 Joined: 26-July 05 From: Marietta, GA Member No.: 4,474 |
I killed two first gears using Redline MTL. The dogs just stripped off because the gear did not slow down enough, ie too slippery. I now use a good cheap 90w
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