07-20-2016, 06:04 AM
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#1
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Registered User
Join Date: Jul 2016
Location: Minnesnowta
Posts: 90
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Transmission Gear Oil...Ravenol Products. Anybody here use them?
Yep, one final search for a decent transmission oil before I have to go to the Porsche dealership.
The MAIN reason that I believe there is a suitable substitute for the (GL4) Porsche gear oil, is that I am pretty well-versed in Audi manual gear boxes, and IMHO, there is probably almost no difference between the 6 speed transaxle (Audi 01E) in my project car, and the 6 speed in my Boxster S. Both manufactured around 2002.
I currently have the Redline MT90 in my (Audi) gearbox, which seems to work fine, but one thing that has always bugged me is that while Redline recommends it, they also say that is is NOT for use in boxes with hypoid gears. The ring gears in both my Audi box, and the Boxster box are both hypoid gears.
Here is the Redline oil info...look closely, and you will see the disclaimer about hypoid gears... Red Line Synthetic Oil - Gear Oil for Manual Transmissions - MT-90 75W90 GL-4 Gear Oil
Anyway, here is the info on Ravenol. Let me know what you think!
RAVENOL Motogear SAE 75W-90 GL-4 - Ravenol
Last edited by FauxDiablo; 07-20-2016 at 06:46 AM.
Reason: Im dumb.
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07-20-2016, 07:27 AM
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#2
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,794
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I am certainly not an expert on this subject.
From what I have read and heard, its best to use the Porsche product.
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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07-20-2016, 07:42 AM
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#3
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Registered User
Join Date: Jul 2016
Location: Minnesnowta
Posts: 90
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HUGE UPDATE!!!
I just got off the phone with one of the two Porsche dealerships I have available to me.
With parts/service I inquired about the cost of gear oil for the manual transaxle in my car (2002 BS 6 speed). He came back with $10.55/quart.
He then had me hold while he went to go confer with the techs about this, due to my disbelief of all that is holy about Porsche OEM fluids.
I asked him if that was the Porsche "OEM Fluid", and he says, "No. It's a Mobil 1 product we get from Lube Tech, we get it in 55 gal drums, it's what all of our techs use for all manual transmissions"
I don't know what the frick to think about anything anymore.
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07-20-2016, 07:50 AM
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#4
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,277
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Quote:
Originally Posted by FauxDiablo
HUGE UPDATE!!!
I just got off the phone with one of the two Porsche dealerships I have available to me.
With parts/service I inquired about the cost of gear oil for the manual transaxle in my car (2002 BS 6 speed). He came back with $10.55/quart.
He then had me hold while he went to go confer with the techs about this, due to my disbelief of all that is holy about Porsche OEM fluids.
I asked him if that was the Porsche "OEM Fluid", and he says, "No. It's a Mobil 1 product we get from Lube Tech, we get it in 55 gal drums, it's what all of our techs use for all manual transmissions"
I don't know what the frick to think about anything anymore.
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Then think about this: Porsche has two suppliers for their manual trans gear oil, Mobil and Shell. It has been that way for about 20 years or so. What is different, is that both companies make a specific gear oil to Porsche specs, which is not a GL4 or GL5 product. So while the drums in comes in may be either Mobil or Shell, it is not a product you can buy anywhere else. We even contacted Mobil several years ago, asking if we could get it in drums for the shop, the answer was no, it is only available from Porsche. So that is how we buy it.
__________________
“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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07-20-2016, 07:54 AM
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#5
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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Quote:
Originally Posted by FauxDiablo
I don't know what the frick to think about anything anymore.
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Ask 10 people why the Porsche OEM fluid is so magical and you'll get 11 answers comprised of stories, myths, rumors, heresy, and innuendo from 2nd hand, 3rd hand, and 4th hand so-called knowledge. I wouldn't be surprised if someone mentioned Hillary, Trump, Bigfoot, and Area 51 somewhere in their reasoning.
Bite the bullet and buy the Porsche OEM fluid.
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
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07-20-2016, 08:10 AM
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#6
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Registered User
Join Date: Jul 2016
Location: Minnesnowta
Posts: 90
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Second Update...just like the first.
Just called the other Porsche Dealer...Same fricken story. Both dealerships use a Mobil 1, straight from the drum. They do not even have a special name for it, other than 75w90...and it's STILL less than $11/quart.
Quote:
Originally Posted by thstone
Ask 10 people why the Porsche OEM fluid is so magical and you'll get 11 answers comprised of stories, myths, rumors, heresy, and innuendo from 2nd hand, 3rd hand, and 4th hand so-called knowledge. I wouldn't be surprised if someone mentioned Hillary, Trump, Bigfoot, and Area 51 somewhere in their reasoning.
Bite the bullet and buy the Porsche OEM fluid.
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That's just the problem.. They seem like they are not aware of any Porsche OEM fluid for the transaxle...."We just use Mobil 1 75w90" is all I get!
I keep asking them about the 999.917.546.00 oil, which is $51 a quart, and they keep saying, " We just use the Mobil 1 75w90" ... bizarre.
Last edited by FauxDiablo; 07-20-2016 at 08:15 AM.
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07-20-2016, 11:25 AM
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#8
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Registered User
Join Date: Jul 2016
Location: Minnesnowta
Posts: 90
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Quote:
Originally Posted by Gelbster
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lol.. I just wonder how many times this discussion has devolved into calling two different dealerships that don't even stock the "required" oil, and insist that all they use is basically off-the-shelf Mobil 1 GL4 gear oil???
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07-20-2016, 12:11 PM
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#10
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,277
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Quote:
Originally Posted by FauxDiablo
lol.. I just wonder how many times this discussion has devolved into calling two different dealerships that don't even stock the "required" oil, and insist that all they use is basically off-the-shelf Mobil 1 GL4 gear oil???
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The gear oil we get from them bears the correct Porsche part numbers per the factory tech sheets on approved gear oils. Yes, they are supplied by Mobil and Shell, but under the correct Porsche part numbers.
It's your car and your money, buy and use what ever you please. But don't automatically assume all dealers are selling aftermarket gear oils, because they are not.
__________________
“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
Last edited by JFP in PA; 07-20-2016 at 12:17 PM.
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