unkledaddy

East Tennessee, USA

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Good Morning,
I have a 2002 Monaco Windsor with a Eaton rear axle/differential.
I am in the process of changing the gear oil and the owners manual
specifies Pennzoil Gear Plus Super-EW 75W90 Synthetic or something
with API GL-5.
I can purchase some Castrol Syngear 75W90 Synthetic with a GL-5 rating that is described as being acceptable for Eaton Road Ranger and Rockwell extended warranties, and I just need some reassurance that it's OK for me to use. I don't want to put 14 quarts of it in the differential only to find out there's a service bulletin saying not to.
Thanks in advance.
Ya'll be safe out there!
Pete & Sue
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Triker33

Homestead, FL

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Joined: 11/30/2002

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OK for you to use it. GL-5 Synthetic made by any manufactures will work.
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hooligan

Pensacola,FL

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Pete: Here is the Eaton Approved lubricants. Includes extended change interval lubricants.
Eaton Approved Lubricants
Hooligan U.S. Coast Guard Ret.
2000 GeorgieBoy Landau DP
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00 BUCK

NE Ohio

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Triker33 wrote: OK for you to use it. GL-5 Synthetic made by any manufactures will work.
agree
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hooligan

Pensacola,FL

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Pete: That link above takes you to the main Roadranger page. The document is here.
Roadranger approved lubricants
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zmotorsports

Utah

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As others have mentioned, any GL-5 rated lubricant is sufficient. I just changed mine again last year and used Valvoline synthetic gear oil.
Mike.
2003 Monaco Dynasty/ 26' Haulmark Edge trailer
2011 Jeep Unlimited Rubicon
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fischer

livingston, tx

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How often do you change rear dif on a. DP ? My gasser says rear dif is for life just asking
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hooligan

Pensacola,FL

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Depends on manufacturer. Eaton, Meritor etc.
My MH has Meritor rear drive, fluid change interval is 50,000 miles or 1 year for dino oil or 250,000miles/ 3 yr for synthetic.
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zmotorsports

Utah

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I replace mine every four years. I replaced it in 2007 when I took ownership and again last year, along with the transmission fluid and hydraulic fluid.
Mike.
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