ACDelco GM Original Equipment 10-4003 Limited Slip Axle Lubricant Additive - 4 oz

GM stopped making and stocking everything for this car. It's extinct. Parts are sparse. But gratefully this little bottle of magic still exists, and is affordable! Change your rear diff fluid every 18-24 months or every 15-25k miles if you own an 04-06 GTO. The LSDs are a metal on metal "cone type" design, so the amount and quality of FM you use is critical, as is flushing the fluid frequently to excrete metal slush in the diff housing. A quality 75W-140 gear oil works very well. Start with 2oz of the modifier, then ~1.5-1.8qts of the gear oil. Drive the car around for a while and listen to how the rear end sounds when turning and performing slow-speed maneuvers in parking lots. Add 0.5-1oz at a time to tune the diff. Let me know if you found this review helpful. 👌 🍺 ✌️

Best price for the A/C Delco product.

Put this in my 2021 GMC Yukon Denali rear driveline oil when I changed it out and it took away the low moaning noise we had while turning! It is a must for 2021-2025 Yukon's and Tahoe's in rear driveline oil.

It is what it is. And its what GM says your supposed to use. so...Warranty satisfied. Gm's happy, im happy. I saved $300 doing the transfer and differential fluids myself. In my driveway with simple hand tools. And it only took 1-1/2 hrs. WARNING TO ALL! Make sure you can access the FILL PORT BEFORE you drain your fluids! Make sure you can fill what you just drained!!!! Or you are stuck. Best luck to you all. Check that fill port!

Used this with GM original rear end fluid to resolve the rubbing noise we were getting with our 2021 suburban. The dealership couldn't figure out the issue but luckily came across a youtube video that listed this additive as something that would fix it.

Works as it should

I looked for a short bit around town for this until I decided the price didn't match the value of this fluid. Glad Amazon had it for WAY less and that was a huge win on my end. Car in now up and burning rubber like before!!!

I ordered this for rear differential oil change for 2021 Yukon Denali. We didn't have any big complaints to solve for noise from limited slip differential, but used it due to you tube videos, tech bulletin etc. Also, helps add fluid if you are only ordered 3 total quarts Gl5 fluid for front and rear differential, so makes sure you have enough, which I did. No issues w/ noise after installation but this job done in July.

信頼できるOEMメーカー品で安心して使用できます。

ممتاز جدا

Excellent lubricant for superchargers

Très bien

works fine