What kind of oil do you use for your rear end?

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Model T Ford Forum: Forum 2013: What kind of oil do you use for your rear end?
Top of pagePrevious messageNext messageBottom of page Link to this message  By Nathan Bright on Thursday, May 16, 2013 - 02:42 pm:

I am asking because Lucas oil has an industrial gear oil that is in the 680w neighborhood.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Chris Brancaccio - Calgary Alberta on Thursday, May 16, 2013 - 02:50 pm:

Go to Google and type this in

rear axle lube site:www.mtfca.com


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ken Todd on Thursday, May 16, 2013 - 06:59 pm:

90-140


Top of pagePrevious messageNext messageBottom of page Link to this message  By JohnH on Thursday, May 16, 2013 - 08:32 pm:

Penrite Transoil 250


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ricks - Surf City on Thursday, May 16, 2013 - 08:52 pm:

Synthetic 90-140, because it don't stink.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ted Dumas on Thursday, May 16, 2013 - 08:52 pm:

Tractor Supply 85W-140


Top of pagePrevious messageNext messageBottom of page Link to this message  By Nathan Bright on Thursday, May 16, 2013 - 09:01 pm:

I talked to lucas today and they suggested running a 50/50 blend of Lucas Heavy Duty Oil stabilizer with their 85/140 gear oil. According to Lucas their gear oil had a phosphorus level of GL5 wich acording to lucas is borderline unsafe for yellow metals such as brass thrust washers. Cutting it with their HD oil stabilizer brings that level to a GL4 which is good for yellow metals (or as we say it in NC... "yeller")


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bob Cascisa - Poulsbo, Washington on Thursday, May 16, 2013 - 09:14 pm:

75-145 Synthetic.

Be_Zero_Be


Top of pagePrevious messageNext messageBottom of page Link to this message  By keith g barrier on Thursday, May 16, 2013 - 09:45 pm:

Nathan, I have always used the lucas and 85/90 50/50 and never any problems. I have 40k on a set of the modern thrust bearings and still goin stronk. KB


Top of pagePrevious messageNext messageBottom of page Link to this message  By Cameron Whitaker on Thursday, May 16, 2013 - 10:09 pm:

Here's my 2 cent's worth. Modern oil is far superior to anything they had back then, so even the lighter weight modern oils will perform beautifully.

However, if you are running felt seals, I'd stick with the 600w. The thinner oils will seep past the felt seals easily and make a mess, not to mention make your rear brakes useless. If you are running modern neoprene seals, you can certainly use the lighter, modern oils and they will work just as well, if not better.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ed Baudoux on Thursday, May 16, 2013 - 10:10 pm:

I am not mature enough to answer this question.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Nathan Bright on Friday, May 17, 2013 - 11:18 am:

haha i will be running modern seals.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Larry Bohlen, Severn MD on Friday, May 17, 2013 - 11:27 am:

Nathan,

Buy the lubriplate from Langs or one of the other suppliers.
It's safe for the new bronze thrust washers.

http://www.modeltford.com/item/90W.aspx

Larry


Top of pagePrevious messageNext messageBottom of page Link to this message  By Nathan Bright on Friday, May 17, 2013 - 11:37 am:

is it safe for the modern seals?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Larry Bohlen, Severn MD on Friday, May 17, 2013 - 11:44 am:

Absolutely, it's what the gentleman (thanks Ed) that rebuilt my rear end recommended and advised to use. Some of the other lubes may be ok on the bronze thrust washers but why risk it?
Protect your investment.

Larry


Top of pagePrevious messageNext messageBottom of page Link to this message  By Chuck Hoffman - Gold Country of Calif. on Friday, May 17, 2013 - 12:03 pm:

preparation H?


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