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HD6 Trans and final drive lube

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Detrot1 View Drop Down
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Joined: 29 Mar 2024
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Detrot1 Quote  Post ReplyReply Direct Link To This Post Topic: HD6 Trans and final drive lube
    Posted: 29 Mar 2024 at 1:36pm
I saw in here somewhere that said you could use hydraulic oil everywhere but the crankcase?
My manual said SEA 50 above 32 degrees SAE 30 below 32 degrees.
CAN I run hydraulic oil in my trans and final drive? SAE 50 is 200 dollars for 5 gal. Will need 11 gals according to my manual. 5 in trans 6 in each drive.
What are your thoughts?
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CAL(KS) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CAL(KS) Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2024 at 2:30pm
80-90 would be better for trans and bevel gear compartment.  can run in finals also
Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20

Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2024 at 2:55pm
I will not give a recommendation because i dont know.. But "MOST" hydraulic oils are in the 10 - 20 - 30 viscosity range..

50w engine oil is comparible VISCOSITY WISE to 80-90 gear lube or ISO 150 - 220 industrial gear lube...






Edited by steve(ill) - 29 Mar 2024 at 2:57pm
Like them all, but love the "B"s.
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2024 at 3:15pm
AMAZON....


Like them all, but love the "B"s.
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2024 at 3:24pm
Like them all, but love the "B"s.
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Detrot1 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Detrot1 Quote  Post ReplyReply Direct Link To This Post Posted: 30 Mar 2024 at 5:37pm
Thank you for all of your replies.
I will stay with SAE 50.
I didnt think it was a good idea, and couldn't find the post I saw. While the hydraulic oil would be convenient, it would just not be best for this application. Thank you all!

Edited by Detrot1 - 30 Mar 2024 at 6:33pm
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Codger View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 30 Mar 2024 at 7:18pm
Originally posted by steve(ill) steve(ill) wrote:

AMAZON....




This product works well in Roadranger transmissions both older, and newer.
A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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Coke-in-MN View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 30 Mar 2024 at 8:13pm
I used Mobile DTE - Extra Heavy grade in transmission as it also lubes the ring and pinion  area . It is 1100 Sabol Second Universal grade (pour rate) which is 50 weight or slightly heavier 
In finals a heavier oil like the 90 or 120 weight gear oil 

Edited by Coke-in-MN - 30 Mar 2024 at 8:14pm
Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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Adrian View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Adrian Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2024 at 7:23pm
If the oil in the final drives is to heavy it won't get through to the outer bearings. I think it's easier to use that right grade than replace final drive bearings later.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 02 Apr 2024 at 2:42pm
the outboard bearing on axle is a link belt roller bearing which is suppose to be lubed by rifle drilling in axle - seen a lot of machines where that housing is drilled to install a grease zerk in casting , drilling where the flat raised area is . Then using gun grease to lube it 
Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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