Transmission Fluid 912E

Gertrude76 · 09-02-2009, 01:27 AM

I was wondering if people had a suggestion for what type of transmission fluid I should be using.

Thanks

hoffman912 · 09-02-2009, 03:03 AM

swepco 201 is the most recomended gear box fluid for early porsches that I know of.

butzip · 09-02-2009, 11:50 AM

Hey Harry where have you been?!?!

Swepco 201 is in all my 901 and 915 trannys.

hoffman912 · 09-03-2009, 03:18 AM

took a break from R/L for a while, not a big fan of new management, but slowly coming back because its all about the people

how have you been man?

cal44 · 09-13-2009, 02:26 PM

x2 on the Swepco 201. I use it in all of my P cars.

GTgears · 10-29-2009, 12:39 AM

Yep. Swepco.

stahwille · 10-29-2009, 05:34 AM

Southwest Petrol. (swepco) is the climbing gear oil , and 201 is bright blu in color. there is one step up with moly added. This however is more than folks need . code # 205 and not blu.. Stahwille

GTgears · 10-29-2009, 01:00 PM

Quote:

Originally Posted by stahwille

Southwest Petrol. (swepco) is the climbing gear oil , and 201 is bright blu in color. there is one step up with moly added. This however is more than folks need . code # 205 and not blu.. Stahwille

I think you mean 203, not 205. And just for people's reference, while 203 is a great oil, it is not recommended in applications where a clutch type LSD is in place. It's too slick with the moly in it.

butzip · 10-30-2009, 06:09 PM

OK so any benefit in using 203 vs 201 in a 915 or 901? You don't want 'slippery' in either..... so I would say 201 is IT.

cusigicz · 11-17-2009, 11:40 PM

I accept with information:while 203 is a great oil, it is not recommended in applications where a clutch type LSD is in place. It's too slick with the moly in it.
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butzip · 11-18-2009, 12:19 AM

Um... OK, how about open diff cars?

GTgears · 11-18-2009, 03:00 PM

Sorry I never got back to you on this. I didn't see the reply until it was bumped.

The way that molybdenum disulfide aka moly works in a gearbox is that it provides boundary lubrication by bonding itself to the surface of the gearteeth, bearings, etc. It creates a long lasting wear surface that significantly increases restistance to the oil shearing and metal on metal contact. It basically aids in boundary lubrication both at start up and at high temps when the oil is least effective. Especially on these old gearboxes, some of which are pushing 40 years old, it will help to increase the lifespan of the gears themselves as well as the ring and pinion.

In my experience it is not too slick for Porsche's proprietary synchronizers as found in all 356 and early 911 gearboxes up until the release of the G50 box in the late 80's. However it does significantly reduce the effectiveness of an LSD by coating the friction discs, which is why we don't recommend it for that particular application.

butzip · 11-18-2009, 05:40 PM

So 203 is ok in there as well. Good to know as my tranny is actually 42 years old, never rebuilt or opened, pushing 450,000 miles and still getting tracked regularly. They just don't make them like they used to..... An yes she still shifts perfectly.

GTgears · 11-19-2009, 03:43 PM

Nice. This wouldn't be the little targa they wrote a story about in Excellence a couple of years back, would it'

09-02-2009, 01:27 AM	#1
Gertrude76 New User Join Date: Sep 2009 Posts: 2	Transmission Fluid 912E I was wondering if people had a suggestion for what type of transmission fluid I should be using. Thanks

09-02-2009, 03:03 AM	#2
hoffman912 The Hoffinator Rennlist Member Join Date: Feb 2002 Location: Columbus, OH Posts: 7,613	swepco 201 is the most recomended gear box fluid for early porsches that I know of. __________________ Harry Hoffman 1968 912 #3656, burgandy red -'Five Grand Fritz' 912 registry charter member #912R0195-C, Rennlist Member#: 030920-4266 Official Nine Dozen, and Leader of Youthful Indiscretion for "HWFM" Racing Murphy is my Co-pilot.. literally pics from 2003 Cross Country Trip pics from my 2007 Cross Country Trip You don’t need a flat 6 to get your kicks

09-03-2009, 03:18 AM	#4
hoffman912 The Hoffinator Rennlist Member Join Date: Feb 2002 Location: Columbus, OH Posts: 7,613	took a break from R/L for a while, not a big fan of new management, but slowly coming back because its all about the people how have you been man? __________________ Harry Hoffman 1968 912 #3656, burgandy red -'Five Grand Fritz' 912 registry charter member #912R0195-C, Rennlist Member#: 030920-4266 Official Nine Dozen, and Leader of Youthful Indiscretion for "HWFM" Racing Murphy is my Co-pilot.. literally pics from 2003 Cross Country Trip pics from my 2007 Cross Country Trip You don’t need a flat 6 to get your kicks

09-13-2009, 02:26 PM	#5
cal44 Addict Rennlist Member Join Date: Dec 2007 Location: San Diego Posts: 670	x2 on the Swepco 201. I use it in all of my P cars. __________________ Sports.... Opiate of Fools

10-29-2009, 05:34 AM	#7
stahwille User Join Date: May 2008 Posts: 19	gear oil Southwest Petrol. (swepco) is the climbing gear oil , and 201 is bright blu in color. there is one step up with moly added. This however is more than folks need . code # 205 and not blu.. Stahwille

09-02-2009, 11:50 AM	#3
butzip Addict Rennlist Member Join Date: Nov 2005 Location: Suffield, CT Posts: 999	Hey Harry where have you been?!?! Swepco 201 is in all my 901 and 915 trannys.

10-29-2009, 12:39 AM	#6
GTgears User Join Date: Oct 2009 Location: Boulder, CO Posts: 36	Yep. Swepco.

10-30-2009, 06:09 PM	#9
butzip Addict Rennlist Member Join Date: Nov 2005 Location: Suffield, CT Posts: 999	OK so any benefit in using 203 vs 201 in a 915 or 901? You don't want 'slippery' in either..... so I would say 201 is IT.

11-17-2009, 11:40 PM	#10
cusigicz New User Join Date: Nov 2009 Posts: 1	I accept with information:while 203 is a great oil, it is not recommended in applications where a clutch type LSD is in place. It's too slick with the moly in it. _____________________________ Calculette pret immobilier taux interet \| Calculette prets immo \| Calcul credit immobilier prets

11-18-2009, 12:19 AM	#11
butzip Addict Rennlist Member Join Date: Nov 2005 Location: Suffield, CT Posts: 999	Um... OK, how about open diff cars?

11-18-2009, 03:00 PM	#12
GTgears User Join Date: Oct 2009 Location: Boulder, CO Posts: 36	Sorry I never got back to you on this. I didn't see the reply until it was bumped. The way that molybdenum disulfide aka moly works in a gearbox is that it provides boundary lubrication by bonding itself to the surface of the gearteeth, bearings, etc. It creates a long lasting wear surface that significantly increases restistance to the oil shearing and metal on metal contact. It basically aids in boundary lubrication both at start up and at high temps when the oil is least effective. Especially on these old gearboxes, some of which are pushing 40 years old, it will help to increase the lifespan of the gears themselves as well as the ring and pinion. In my experience it is not too slick for Porsche's proprietary synchronizers as found in all 356 and early 911 gearboxes up until the release of the G50 box in the late 80's. However it does significantly reduce the effectiveness of an LSD by coating the friction discs, which is why we don't recommend it for that particular application.

11-18-2009, 05:40 PM	#13
butzip Addict Rennlist Member Join Date: Nov 2005 Location: Suffield, CT Posts: 999	So 203 is ok in there as well. Good to know as my tranny is actually 42 years old, never rebuilt or opened, pushing 450,000 miles and still getting tracked regularly. They just don't make them like they used to..... An yes she still shifts perfectly.

11-19-2009, 03:43 PM	#14
GTgears User Join Date: Oct 2009 Location: Boulder, CO Posts: 36	Nice. This wouldn't be the little targa they wrote a story about in Excellence a couple of years back, would it'