Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > 911 / 930 Turbo & Super Charging Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered
 
CVJR's Avatar
 
Join Date: Oct 2009
Location: Ellicott City, MD
Posts: 201
Garage
911 Turbo/ 930 gear oil recommendation

Hi All, I'm a newbie 1987 911 Turbo (or is it a 930?) owner. 39,000 miles, current gear oil not known. Which transmission gear oil to use? Do all '87 Turbo's have LSD or do I need to check that to detirmine gear oil spec? I read a bunch of the 911/915 threads on gear oil (Kendall v. Swepco), but not sure if that relates to a 911 Turbo 4 speed. I bought Swepco 201 from our host but now having doubts if it's the correct gear oil.

Thanks for your reply.

__________________
'86 Porsche 928S
'87 Porsche 930 Coupe
Old 07-01-2011, 08:03 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
E-man930's Avatar
 
Join Date: May 2005
Location: Atlanta GA
Posts: 627
I filled mine up with Royal Purple 75W90 gear oil.
Old 07-01-2011, 08:08 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered
 
CVJR's Avatar
 
Join Date: Oct 2009
Location: Ellicott City, MD
Posts: 201
Garage
Thanks E-man, best of luck getting your car back to running state.
__________________
'86 Porsche 928S
'87 Porsche 930 Coupe
Old 07-01-2011, 08:17 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Join Date: Sep 2000
Location: Maryland
Posts: 861
When I bought my 930 I used Swepco 201 and never had a problem. Great to see another nice Porsche in Maryland.
__________________
16 VW Touareg
05 Porsche Cayenne S
87 Porsche 930
84 VW Rabbit GTI
Old 07-02-2011, 03:28 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Manassas, VA
 
lucittm's Avatar
 
Join Date: Apr 2007
Posts: 1,211
Garage
There was some discussion about conventional oil for the very early transmissions due to the tighter tolerances used back then and now the synthetic oils are recommended for the more modern drive trains. Of course this could be entirely related to the fact that synthetic oil was not even a dream for most of us from 1950-1970. I think the synthetic oils offer better protection across the temperature spectrum and tend to not be as thick when cold. Cold gear oil puts a lot of strain on those rotating components.

I used Mobil Delvac 75W-90 gear oil because that is what was recommended by Porsche for my car. It is approved for LSD and if you are not sure if you have LSD, it is better to use an LSD lubricant than to not. I had a hard time finding this oil but the good people at Lufteknic had it for $55 a gallon. Maybe more expensive (delivered) but I sleep well at night.

Mark
__________________
1991 964 Polar Silver Metallic Turbo Coupe
Old 07-02-2011, 05:31 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
Join Date: Jul 2006
Location: S. Florida
Posts: 7,289
[QUOTE=CVJR;6112476]Hi All, I'm a newbie 1987 911 Turbo (or is it a 930?) owner. 39,000 miles, current gear oil not known. Which transmission gear oil to use? Do all '87 Turbo's have LSD or do I need to check that to detirmine gear oil spec? I read a bunch of the 911/915 threads on gear oil (Kendall v. Swepco), but not sure if that relates to a 911 Turbo 4 speed. I bought Swepco 201 from our host but now having doubts if it's the correct gear oil.

You have the Swepco 201 and it is a quality petroleum base GL5 oil that is the right stuff for the porsche steel synchros and 930 gearbox. 4 quarts of the Kendall sounds like a very good alternative that is almost half the price of a gallon of Swepco 201 here on pelican Pelican Parts - Product Information: KEN-LSD-7745.
I hope that price doesn't go up.

Not all 930 gearboxes have limited slip. There is a sticker under the hood and it will have the number 220 in the option list if the car came with LSD. If you rotate one rear wheel while the back of the car is lifted the other wheel will rotate in the same direction with LSD and the opposite direction without it.
You want 80w-90 GL5 gear oil with limited slip additive. Without the additive the LSD clutches will chatter when you turn and go around a slow corner like turning at an intersection or stop sign.
You can add 1 or 2 bottles of limited slip additive to the gallon of oil in it already if it doesn't have the additive and chatters. Drain out some of the oil first so it isn't overfilled if doing that.
Swepco 201 has the LSD additive in it.

You got advice from someone using Mobil Delvac synthetic gear oil in a 1991 964 turbo. A 964 turbo has a G50 5 speed transaxle made by Getrag and it has Borg Warner synchros that work fine with synthetic gear oil.

Your '87 930 has a Porsche made 930 4 speed transaxle that's very similar to the 915 transaxle and both have Porsche steel synchros that grip and work better in petroleum base gear oil.
Synthetic gear oil is great for the gearsets and bearings but a little too slippery for porsche steel synchros to do their job as well and the increased synchro ring slippage in synthetic oil may wear out the porsche synchros faster than dino petroleum base gear oil.
Old 07-02-2011, 11:37 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
E-man930's Avatar
 
Join Date: May 2005
Location: Atlanta GA
Posts: 627
Too slippery? What? Dude, more slippery = better in a gearbox. Less friction = less heat & less wear. If you have LSD add some Posi-Trax additive and call it good. I have been using Royal Purple synthetic gear oil in every fun car I have owned with nothing but better results than dino trans oil, including the 930.
Old 07-02-2011, 02:46 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered
 
Roby466's Avatar
 
Join Date: Sep 2009
Location: Halifax, Canada
Posts: 650
Garage
I was just looking at the same issues lately. I contacted the SWEPCO rep and he recommended the 210 or 201. Both the 201 and 210 already have the LSD additive in them and he said that the 210 was a bit better in high torque applications and high heat (racing). The 201 will be better if your synchros are already worn out a bit. I filled my 930 with the 210 and my friend's 77 911 with the 201, both feel better than before. The 930 and 915 transmissions do like a bit less slippery oil because of the bulk gear synchros, unlike the G50 which has Borg Warner synchros like all modern cars. You have the good stuff with the SWEPCO 201.
Nice car by the way!
__________________
David
1985 Black 930, K27 7006, Garretson Intercooler, Adj boost, TB: 23 - 31mm, bielstein sport shocks, ER polybronze bushings front and rear, ER monoball joints front and rear with offset camber plates, 935 X triangulated strut brace, raised spindles, racing bump steer kit
1981 Black 911sc (sold)
Old 07-02-2011, 07:28 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
Tilikum Turbo's Avatar
 
Join Date: May 2010
Location: Los Angeles
Posts: 1,004
Garage
SWEPCO ain't cheap, but then neither is a rebuilt Porsche tranny.
__________________
1983 911 3.3L Turbo(YES, I know the turbo badge is on the right...had to be different!)
1996 Toyota Corolla(der 'clapper')
Old 07-03-2011, 08:09 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered
 
mark houghton's Avatar
 
Join Date: Jul 2008
Location: Central Washington State
Posts: 3,893
Swepco 201 in mine. I replaced whatever was in there when I first bought the car, the gears still go round and round, the tranny shifts, the LSD doesn't growl, and the car goes down the road. What else could anyone want?
__________________
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 07-03-2011, 04:59 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Registered User
 
SEE YA's Avatar
 
Join Date: Sep 2005
Location: South West GB
Posts: 158
Anyone got any tips on changing the geabox oil on a 930. Things that make the job easy. I am going to try Swepco gearbox oil.
__________________
EVERY MILE IS A SMILE

porsche930.myfreeforum.org
Old 05-14-2012, 09:46 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
River Rat
 
Dave 86 930 Fl's Avatar
 
Join Date: Dec 2005
Location: 1000 Islands NY
Posts: 405
Recommended by the 901 Shop for my track 930.

MonolecŪ Gear Lubricant 703 - 704 on Lubrication Engineers, Inc.

I change the oil every 20 hours and so far so good. The trans shifts a little hard when cold, but works great once the temps go up.
__________________
1986 930 - K27-7200, Andial Intercooler, Tial Wastegate, Electronic Boost Controller, B&B headers, Bodart Zork, Leask Adjustable WUR, Full Elephant Racing Suspension w/Adustable Spring Plates and Von Shocks, Wevo Transmission Mounts, Fuel Safe Fuel Cell, Forgelines (9"/11"), Hargett Shifter, Innovate AFR, Cobra CF Seats, DAS Rollbar, Coleman Floating Rotors, Lightweight Interior, Forgeline 17" x 9"/11", 2800 lbs.
Old 05-14-2012, 11:41 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
 
Registered User
 
CaptainCalf's Avatar
 
Join Date: Jul 2010
Location: Lithia, FL
Posts: 1,265
Quote:
Originally Posted by CVJR View Post
Hi All, I'm a newbie 1987 911 Turbo (or is it a 930?) owner. 39,000 miles, current gear oil not known. Which transmission gear oil to use? Do all '87 Turbo's have LSD or do I need to check that to detirmine gear oil spec? I read a bunch of the 911/915 threads on gear oil (Kendall v. Swepco), but not sure if that relates to a 911 Turbo 4 speed. I bought Swepco 201 from our host but now having doubts if it's the correct gear oil.

Thanks for your reply.
Very nice 930! Big Mike over at JB Racing builds 4speed LSD gearboxes with his eyes closed and both arms tied behind his back and he recommends Swepco because it's less slippery, so that's what I use...
__________________
FS 1987 930 DTAFast EFI w/Electronic Dash, 17x9x11" Lindsey Racing Fuchs, Andial 8.39 R&P, C2 Intake, SuperCup Cams, Flame Ringed Heads & Cylinders, TurboKraft Full Bay Intercooler, RearlyL8 Twin Scroll Headers, Big Bullseye Twin Scroll Turbo...SOLD
1999 Harley Davidson Custom 1250 Hardtail Bobber..SOLD
2014 BMW X6M, 2012 BMW 128i, 2014 GMC Sierra, 2015 Cobia 237 Center Console 300hp Yamaha
Old 05-14-2012, 12:35 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered
 
David's Avatar
 
Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 9,575
Garage
I've been happy with Swepco but a very experienced racing buddy was praising Royal Purple as I watched him pull the gears out of his Star Mazda formula car for inspection the other day. He said it's night and day better than Mobil 1 but that may not be saying much.
__________________
2014 Cayman S
2011 Cayenne Turbo
1979 930 (475 rwhp at 0.95 bar)
Old 05-14-2012, 05:32 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
beancounter
 
jwasbury's Avatar
 
Join Date: Jan 2008
Location: Weehawken, NJ
Posts: 3,627
I just loaded my gearbox with Motul Gear 300LS. I'm not sure what was in there before (put in by wrench that rebuilt the trans), but it was red in color. So far, so good. I did a track day on May 4 and maybe it was placebo effect, but my gearbox felt better than ever.
__________________
Jacob
Current: 1983 911 GT4 Race Car / 1999 Spec Miata / 2000 MB SL500 / 1998 MB E300TD / 1998 BMW R1100RT / 2016 KTM Duke 690
Past: 2009 997 Turbo Cab / 1979 930
Old 05-14-2012, 06:20 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Registered
 
Geary's Avatar
 
Join Date: Feb 2003
Location: Kailua, Bend, & Tamarack
Posts: 1,573
"Better feeling" oils aren't necessarily protecting parts better, they're merely allowing smoother shifts. Long term EP (extreme pressure) protection is far more important if doing any track/street racing. The two factors (EP protection / smooth shifting) are not related, so a particular oil may provide silky smooth shifting while providing piss poor EP protection. I could name oils that fit in this category.

Swepco provides excellent EP protection, whether installed in the 930 4-speed or G50/50 & G50/52 5-speeds. Swepco also provides good shifting in the 4-speed, and decent shifting in the 5-speed. The synthetics mentioned in this thread may provide slightly smoother shifting, but they probably won't provide the same level of long term EP protection.

A number of companies making synthetic gear lube have changed their formulation over the past few years , and the end customer has been paying dearly for these changes (which never seem to be for the better). I see the 901 Shop mentioned .. they are just one facility that has learned the hard way in their own race car, when using one of the "evolving" synthetic oil mentioned in this thread. So, they tracked down a better solution, settling on a very high quality non-synthetic .. similar to Swepco or Kendall in terms of long term EP protection.

In fact, there are a fair number of well-known shops who have gone back to "known quality" non-synthetics for their customers late model Porsche race cars .. something to think about at the next oil change.
Old 05-17-2012, 06:26 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Registered
 
pdqcarrera's Avatar
 
Join Date: Jul 2001
Posts: 330
Garage
Swepco

+1 for Swepco. Been running it longer than I can remember or would rather even want to admit. In both a 915 race car and 930 4spd street car it's proven to be the best. The 2 times I've tried another (recommendations by others) I noticed a detrimental difference in cold and/or hot shifting.
Old 05-18-2012, 03:43 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #17 (permalink)
Registered
 
Join Date: Mar 2003
Location: Texas
Posts: 2,702
Garage
4 or 5 years ago my 76 was getting harder and harder going from 3rd to 2nd. So I went from the factory short shift kit to a wevo with the ujoint too and swepco 201. Shifts way better and easily goes into 2nd. Not sure what made the difference but it truly did improve what I thought was a gearbox that might need major service. Good looking car.

__________________
63 356 So Called Outlaw
76 930
Old 05-18-2012, 04:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 02:39 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2020 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.