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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

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Old 04-16-2014, 11:35 AM
Camper Special Gene Camper Special Gene is offline
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Limited Slip rear axle Fluid

Hi Folks:

My truck is a 1965 F250 with the Dana 60 Limited Slip rear axle. I've only had the truck a short while and am changing the rear axle oil for the first time. The stuff that came out was thicker than molasses. The new stuff I put in that came from the local part store was a lot thinner. Here's what I bought:

Valvoline SAE 80w-90 Limited Slip. The bottle says "recommended for all hypoid differentials where API GL-4 or GL-5 fluid is specified."

Parts guy says this is correct for a limited slip axle, but I'm wondering if this applies to an old truck like mine or only to modern truck limited slip axles. Did I buy the right stuff?

Thanks,

Gene
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Old 04-16-2014, 03:47 PM
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NumberDummy NumberDummy is offline
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Originally: 90 weight gear lube + 4 ounces of friction modifier used with Limited Slip.
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Old 04-16-2014, 05:05 PM
norfolknova norfolknova is offline
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You still need to add the friction modifyer to the gear oil. Hypoid refers to the bevel cut gears, not the limited slip.

Matt
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Old 04-16-2014, 05:05 PM
 
 
 
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