Author Topic: L52 Break in & fluid??  (Read 477 times)

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idahank

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L52 Break in & fluid??
« on: Mar 18, 2020, 09:48:44 PM »
Hay you all I was just wondering what is the break in procedure and what fluid you guys recommended I use in my freshly rebuilt Marlin L52 Transmission?
Thanks
1980 body,1983 running gear with 4.11 Detroit Truetracs front and rear, New Marlin Transmission & T-Case with 4.7 gears, 30x9.5 R15 Cooper Discoverer STT LT, custom front & rear bumpers.

idahank [OP]

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Re: L52 Break in & fluid??
« Reply #1 on: Mar 21, 2020, 09:18:20 AM »
Just heard back from Marlin and they suggest to break in with conventional 75w90 for the first 1000 miles then they recommend using Redline MT-90 75w90 fluid. So I thought someone out there might want to know.
Thanks
1980 body,1983 running gear with 4.11 Detroit Truetracs front and rear, New Marlin Transmission & T-Case with 4.7 gears, 30x9.5 R15 Cooper Discoverer STT LT, custom front & rear bumpers.

Gnarly4X

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Re: L52 Break in & fluid??
« Reply #2 on: Mar 24, 2020, 03:08:20 AM »
Just heard back from Marlin and they suggest to break in with conventional 75w90 for the first 1000 miles then they recommend using Redline MT-90 75w90 fluid. So I thought someone out there might want to know.
Thanks


I believe you'd be very hard pressed to find anyone on the planet that knows MORE about those gears than Marlin!!  :thumbs:

Gnarls.  :gap:
1986 XtraCab SR5 22RE 5speed W56B, ~26,000 MI after break-in, DIM (Did It Myself) rebuilt engine - .020" over, engnbldr RV head, OS valves, 261C cam, DT Header. https://imgur.com/oACTHTR

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