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Registered
Join Date: Nov 2007
Location: Calgary, AB
Posts: 276
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What Trans. Fluid do I use?
I am installing a rebuilt '74 915 in my '71 and was wondering what fluid I should use?
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'71 911E Targa |
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Swepco #201.
Nothing better for a 915 (or 901). ![]()
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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Get off my lawn!
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I doubt you will find any arguments with Steve's recommendation. Sweepco 201 is all I have used in my 1985 911.
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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Slumlord
Join Date: May 2001
Location: Canada
Posts: 4,983
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Castrol is also fine. Too much faith is put in Swepco. It's just a lubricant, it can't fix a worn synchro or a mal-adjusted shift linkage.
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84 Cab - sold! 89 Cab - not quite done 90C4 - winter beater |
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Quote:
![]() ![]() I've used virtually everything over the past 33+ years thats available in the US and Swepco does the best job of protecting that sensitive R&P gearset. You are right though, no lubricant is a substitution when there are other mechanical problems at work.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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Senior Advisor
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Swepco 201.
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08 Cayenne Turbo |
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Slumlord
Join Date: May 2001
Location: Canada
Posts: 4,983
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I always was of the opinion that Castrol was as good as Swepco. I just never posted it until John Walker said the same thing.
I can see a particular oil making a 'slight' difference in shifting, as the additives and viscosity can affect the synchros' operation. I can not, however, accept the argument that a specific oil is FAR superior to another NAME BRAND quality gear oil, or that Swepco will save pinion gears from impending doom, while Castrol will not. I could be wrong. I don't think I am. But I could be.
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84 Cab - sold! 89 Cab - not quite done 90C4 - winter beater |
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Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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I also use Swepco, but there are some who swear by Valvoline HD 80/140 gear lube. Any comments about this one?
Let's make this one shorter than the engine oil thread. ![]() Sherwood |
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Moderator
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I'm sure that there are multuple answers to the original question but by far the bulk of the empirical evidence is w/ Swepco. My local shop owner likes Cen-Pe-Co I'm sure it's fine but don't feel like testing it when there is a well documented superior alternative.
I did test FLAPS M1 and found that I could beat the syncros w/o really trying too hard, never again.
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Bill Verburg '76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone) | Pelican Home |Rennlist Wheels |Rennlist Brakes | |
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Registered
Join Date: Aug 2002
Posts: 1,508
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Hi everybody. I'm a Swepco field service guy (sales). I picked up a Swepco territory here in Western KY to service the inland marine industry. You should see some of the applications 201 is used in in manufacturing, mining and transportation. it truly is some amazing stuff.
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Registered
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Quote:
Best, Doyle
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Recording Engineer, Administrator and Entrepeneur Designer of Fine Studios, Tube Amplifier Guru 1989 Porsche 911 Carrera Coupe 25th Anniversary Special Edition Middle Georgia |
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Registered
Join Date: May 2003
Location: Columbus, Ohio
Posts: 1,108
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wm711 is Swepco a synthetic oil? I have not changed my trans oil in 8 years but would like to use something that will work as well as the synthetic oil I use for the engine (Red Line).
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<insert witty title here>
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I just rebuilt my tranny and, knowing that the initial fill would have to be changed after 1000 km or so, I put Castrol in, rather than spending the money on Swepco. I had Swepco in there before for about 2 years (changed in myself, so I'm 100% it was swepco). I haven't noticed one lick of difference in shifting with the Castrol. Not the slightest bit. Of course, the tranny shifts much better now than it did before the rebuild, but that's because of a failed pilot bearing causing all sorts of grinding. Before that problem occurred, it shifted exactly like it shifts now.
So consider me one in the camp that Swepco isn't any better, insofar as shifting determines. Long term, I can't say, maybe there's a difference. But I don't buy the stories of "oh, I switched to swepco and it changed dramatically!". In those cases, the old tranny oil must have been REALLY old! Or maybe running very low. Where's lubemaster to weigh in on this?
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Current: 1987 911 cabrio Past: 1972 911t 3.0, 1986 911, 1983 944, 1999 Boxster |
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Slumlord
Join Date: May 2001
Location: Canada
Posts: 4,983
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Who needs Lubemaster? I just posted the correct answer.
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84 Cab - sold! 89 Cab - not quite done 90C4 - winter beater |
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