Gear Oil

[Rox Crusher]

IΓÇÖm getting ready to get some diff work done and will be replacing the gear oil.

My memory fails me, but I recall there was some recommendations of what type to use as the cheaper stuff foams ?

Any recommendations ?

[landshark]

IΓÇÖm getting ready to get some diff work done and will be replacing the gear oil.

My memory fails me, but I recall there was some recommendations of what type to use as the cheaper stuff foams ?

Any recommendations ?

it only foams if you drive it... :)

I started using AMSOIL SEVERE GEAR® 75W-140 and although I haven't done a bake off between brands it seems to perform well so far. I have also used Royal Purple, Valvoline and others without ill effects. I would suspect unless you are towing all the time or running at high speeds most parts store gear oil would work just fine.

with that said, i woudn't go any higher than 140 or lower than 90w...

[Booger]

I would go with something other than the cheap stuff if you do any highway running. I've had experience using Coastal before. I saw how it would throw oil from the vent hose after, and during, highway speeds. Replaced with Valvoline and no more throwing oil problem. I went so far as to cobble a little plastic jug to stick the vent hose into to catch all the oil thrown from the vent. I think the synthetics work better as far as film strength goes. I noticed a big difference in shifting my Harleys transmissions when I switched to Royal Purple gear lube in the transmission so that sold me on using it in a vehicle.