transaxle and final drive oil

[bosruten]

So, I gave up looking for Swepco and Redline only sells in one liter jugs. I decided to try this http://www.mobil.ca/Canada-English-LCW/carengineoi...5w90.aspx# So far, I like it.
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'87 Syncro Weekender

[zak99B5]

Personally, I'd try a GL-4 spec gear oil such as GM or Pennzoil synchromesh.

But if it's working well for you, run it.

And BTW, what's wrong with 1l jugs?
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1991 Tintop GL Manual tranny, EJ22

[Syncro Jael]

Mobil Delvac was recommended to me by a very good source. Daryl. And I believe Matt at AA is running it in his Syncro. We have been using it in a couple Syncro transaxles for over a year. Drain magnet (swarf) has been minimal. Shifting in all temperatures is smooth.

Decisions for gear oils are based on engine torque, horsepower, and loading of the transaxle.

Mobil1 gear oil and Mobil Delvac are not the same.

http://www.mobil.com/China-English/Lubes/PDS/GLXXENCVLMOMobil_Delvac_Gear_Oil_80W-90_85W-140.aspx

http://www.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil1_Syn_Gear_Lube_LS_75W-90.aspx
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1987 Syncro Westfalia Hightop - NAHT
Subaru EJ25 Forged Frankenmotor, Triple Knob.
Jael = (Mountain Goat)

[insyncro]

[Merian]

whatever you do, be sure to ignore the specification from the engineers who designed the vehicle

[Waldi]

The best is a GL4/5 oil. Means GL4 and GL5.

I use always the same oil Full Synthetic 75W-90 GL4/5

I think you wont get it over there.

http://www.reifendirekt.de/cgi-bin/oshop.pl?item_i...disabled=1

[Franklinstower]

i was about to change oils and go with the Kendall NS-MP 80/90 Hypoid GL5. My 915 trans in a '78 SC shifts the absolute smoothest with that oil.

However I reached out to Kendall and asked them if I could use that GL5 in my Vanagon trans with bronze contents. This is the reply from Kendall:

Hello Paul,

Thank you for your email and using Kendall NS-MP 80W-90 gear oil. Unfortunately, the Kendall NS-MP 80W-90 is not the correct product for your VW. You are correct that GL-5 gear oils will attack yellow metals. GL-4 gear oils are typically used in applications that contain yellow metals such as brass or bronze i.e. manual transmissions. In the Kendall product line we currently do not offer a GL-4 gear oil. Please take a look at Red Line Synthetic GL-4 MTL 75W-80. The link is below. The MTL is a great product and should meet your needs. Please let me know if you have any questions.

http://www.redlineoil.com/Products.aspx?pcid=7

Best regards,

Kyle Kress
Technical Coordinator-Industrial Lubricants
Phillips 66 Lubricants
918-977-4610
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'89 Westy - EJ25/22 Frank 4.44 5mt
'75 Miami Blue Sunroof FI Standard Bug

[davevickery]

Ah, yah I think I'm going to have to kind of disagree with you on that.

I don't really care actually, but after a thorough reading a little bit of scolding, I came to the conclusion that GL-5 are fine. The think the determining factor were the reputations of the people who were saying it and the small amount of material that could be affected and something about the size of something inside the transaxle. Anyway I listened for a while and from now on I'll put GL5 Extreme Pressure Synthetic oil in mine. Specifically Amsoil 75-90 EP Synthetic. Mail order only and roughly $15/quart. No biggy to me. I did first buy Amsoils GL-4 version but it does not have the same extreme pressure rating. I'll run that until the next change.

[Franklinstower]

[Syncro Jael]

Oh my, not another GL-4 / GL-5 debate.

Read up on new gear oils and you will come to a different conclusion.




http://www.thesamba.com/vw/forum/viewtopic.php?t=620059&highlight=gear+oil
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1987 Syncro Westfalia Hightop - NAHT
Subaru EJ25 Forged Frankenmotor, Triple Knob.
Jael = (Mountain Goat)

[Merian]

I only use imported jojobo bean oil