is valvoline high performance 80-90w gear oil any good for differentials? does anyone use it and I drive mostly highway. I have a Dana 30 and 35
Valvoline's Gear Lube (oil) is a superb GL-5 gear lube that is as good as any for our axles, it's what I run too. 70W-80, 80W-90, 75W-90, 80W-120, 85W-140 etc. would all be fine. Though go with the heavier 80W-120 or 85W-140 if you tow a trailer much. The exact viscosity of gear lube is not critical.is valvoline high performance 80-90w gear oil any good for differentials? does anyone use it and I drive mostly highway. I have a Dana 30 and 35
Negative. Valvoline high performance has friction modifier in it already and is LSD safe, unless it says otherwise on the bottle but I'm pretty sure that's regular Valvoline and not the "high performance".It's gear oil, that's what it's used for...it's as good as any other. Do you have LSD? You'll need the LSD additive.
I found a box of the proper weight of gear oil but it says "Limited Slip" on them. Can I used this in my non LSD differentials? There are about 8 bottles and I would rather not have them sit.True, and most GL-5 axle gear lubes sold in the auto parts stores contain the additive. It's darned hard to find one that does not contain it.
Most gear oils out there have the LSD additive but are made for use in a non LSD as well. I have a mechanical LSD in my Tacoma (newer models are the electronic limited slip), and even though there are LSD additives in the gear oil, it is still recommended to add an additional tube of friction modifier to the mix. Not sure why but all of the forums recommend it as well as the dealer.I found a box of the proper weight of gear oil but it says "Limited Slip" on them. Can I used this in my non LSD differentials? There are about 8 bottles and I would rather not have them sit.
The sulphur additive used in most GL-5 gear lubes is indeed bad for the yellow metal synchros in manual transmissions. But axles absolutely require a GL-5 to protect the ring & pinion gears where the sulphur based additive is very helpful.I thought GL5 was bad due to it eating the yellow metals. A Google search provides a lot of info about this subject.
No need to use Mopar lubricants, they're just made for them by companies like Valvoline, Mobil, etc. Any GL-5 from a major brand like Valvoline, Castrol, Torco, Mobil, etc. will provide superb protection for your axles.Is there any strong reason to stick with Mopar fluid for the differentials or is Valvoline ok?
Just acquired a TJ Sport and have no idea what's currently in them but want to start fresh and change both diff's this weekend so wondering what fluid to pick up.