Mobil1 Gear Oil, 75W90, Limited Slip Additive, Synthetic, 1 qt Bottle, Each

I purchased Mobil 1 Differential Fluid for my vehicle, and so far, it seems to be working great. The application was smooth, and I noticed an immediate improvement in performance—quieter operation and smoother driving. It meets the specifications I needed, and the quality seems top-notch, as expected from Mobil 1.Of course, the real test will be over time, but for now, I’m happy with the purchase. If anything changes down the road, I’ll update my review. For now, I’d definitely recommend it to anyone needing a reliable differential fluid.

Very pleased so far. I had some unknown, burned-up 75w-140 (or possibly just really beat-up 75w-90) fluid in the front and rear diff's of my recently acquired 99 Subaru Impreza Outback Sport. The diff's were noisy and driveline drag was simply horrible. "Coasting" with my 4spd Auto was an abstract concept. My auto coasted like a manual...whiplash.I drained the old fluid (which smelled burned and was brown) and put this stuff in the front and rear differentials. Instantly, it seemed that even throttle response was heightened and the car could coast! This isn't to say that this is magic fluid, but only to show how horrible the previous fluid was. I'm very pleased so far.Truthfully, I'm planning on running this fluid for a few thousand miles (3-5k) and then draining this in favor of Lucas Syn 75w-90 with a hint of Redline Heavy Shockproof. I have a buddy who used that combo in his 2007 Tundra rear end and he said it not only saved his noisy diff, but reduced his diff housing temp by over 20 degrees on his commute home. That's huge.However, in the meantime, this is so cheap it's competitive with dino-based gear oils. In fact, at $11 shipped, there's simply no excuse to NOT use this as a baseline even on a beater.Bottom Line: My 99 Impreza OBS's differentials are quieter and run cooler. Further, the car coasts quite effortlessly now, as opposed to before with the old gear oil. I am confident that this would protect my differential for a std 50,000 change interval.For highway driving with AWD vehicles, there's no excuse to not be using a fully synthetic gear oil. Also, this 75w-90 also supplants the 80w-90 rated gear oil for the front diff in my 99 Subaru. It's meets the specs even though it's a lighter grade (because this is fully synthetic).

Works as it should ! No complaints.

Smooth Shifting, Reliable ProtectionMobil 1 75W-90 synthetic gear oil has been an excellent addition to my maintenance routine. Right away I appreciated that it comes with the limited slip additive already blended in, so there’s no guesswork or need to buy something extra for differentials that require it. I used it on a rear differential service, and the difference was noticeable—smoother operation and quieter performance.The viscosity feels right in all conditions, with no whine on cold mornings and no thinning out when towing in the summer heat. Mobil 1 has always been a brand I trust, and this gear oil holds up to that reputation. The quart bottle is easy to handle and pour, and the synthetic formulation should give it a long service life between changes.Something to note: if you have a vehicle that doesn’t call for a limited slip additive, just confirm compatibility before use since this formula already has it included.Bottom line: A top-tier synthetic gear oil that delivers smooth shifts, strong protection, and peace of mind, especially for vehicles with limited slip differentials.

Great deal works fantastic

Easy to use container, good price and quick delivery

Great differential fluid with limited slip additive already in the mix.

have had good results using mobil 1