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Glen Member
Joined: Nov 21, 2008 Posts: 1
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Posted: Mon Dec 01, 2008 6:56 am Post subject: Transmission / Gear Box Oil |
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I have recently purchased a M38A1 170 (1953) Ambulance and would like to know the european equivalant of the gear box oil and the quantity required. If anyone can help it would be much appreciated. |
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GPA Member
Joined: Aug 07, 2008 Posts: 216 Location: Hungary
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Posted: Wed Dec 03, 2008 2:34 am Post subject: |
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Hi,
A couple of gear oil types wich should be available in most European countries are Chevron RPM SAE 90 or BP Gear oil 90 or Castrol ST90 in their Classic Oil range. (Oil salesmen will probably try to sell you some modern multigrade.) Fill it slowly to the bottom of the filling hole. If you buy about 5-6 liters you can top it up later with the same type of oil if you have a leak.
Good luck with your new Jeep.
Zoli
M38A1 |
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GPA Member
Joined: Aug 07, 2008 Posts: 216 Location: Hungary
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Posted: Wed Dec 03, 2008 4:49 am Post subject: |
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In addition to the post above: SAE 90 equivalent ISO 220.
On some lube charts they recommend SAE 90 EP for the differentials. I would like to know what Wes's opinion about this.
Zoli |
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hillbilly21 Member
Joined: Aug 26, 2005 Posts: 510 Location: North Carolina
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Posted: Wed Dec 03, 2008 5:30 am Post subject: oil |
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I just put in 85-90 Rotella in MINE yesterday
2 1/2 qts in each axle
tranny 1 qt
transfer case 3 pts |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16256 Location: Wisconsin
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GPA Member
Joined: Aug 07, 2008 Posts: 216 Location: Hungary
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Posted: Wed Dec 03, 2008 12:41 pm Post subject: |
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Yes Wes, but the plates on the Jeeps and the Army issued manuals state SAE 90. Only some civilian Jeep material mentioned EP oil for the diffs and they use very similar transmissions and differentials. The ratios are different. I thought you may know the reason. |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16256 Location: Wisconsin
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GPA Member
Joined: Aug 07, 2008 Posts: 216 Location: Hungary
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Posted: Thu Dec 04, 2008 5:16 am Post subject: |
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Hi,
So they recommended the Universal Gear Oil for both the transmission/transfercase and the differentials, but really only the diffs needed the gear oil wich contained EP additive. They did this because they did not want to carry or stock one more type of oil?
If we change the gear oils we have to put SAE 90 in transm. and SAE 90EP in the diffs?
Zoli |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16256 Location: Wisconsin
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GPA Member
Joined: Aug 07, 2008 Posts: 216 Location: Hungary
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Posted: Fri Dec 05, 2008 12:13 am Post subject: |
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Thanks Wes. |
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pockers Member
Joined: Mar 02, 2009 Posts: 46
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Posted: Thu Mar 19, 2009 10:09 am Post subject: |
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Hi
can any one tell me if european Hypoid Gear oil EP 80W90 would be suitable for m38a1 gear box &/or diffs?
(as i have a quantity of this already)
others available to me are 75w/80 & 75w/90
any ideas what would best suit?
many thanks |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16256 Location: Wisconsin
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pockers Member
Joined: Mar 02, 2009 Posts: 46
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Posted: Fri Mar 20, 2009 1:49 pm Post subject: |
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Many thanks for swift reply
roll on the summer
fantastic web site!
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