post your latest differential fluid change

[Pick73]

2003 GMC 2500HD Duramax 4X4, 210,453 miles,, rear differential today. Out Mobil 1 75W90, in Valvoline Full Synthetic 75W90. Drained and filled 4 quarts. I don't remember when I changed it last, maybe around 125K? But boy, I could not believe how clean the Mobil 1 looked. Almost nothing on the magnetic plug. Almost aborted the drain when I saw how clean it was. No sparkles, like I see in pictures and YouTube videos.

 

[BrianF]

Did the old 2017 Ram 3500 with the 11.5 AAM. Out was Co-op Gear Oil SL, group 4 based 80w140. In went the same. 84,000km on this run. Essentially nothing on the magnet. The oil was dark but nowhere near black.

I'm almost done the 20L pail I bought in around 2014. Should be enough left to do the stupid PTU on the Ford Flex....

 

[edyvw]

Originally Posted By: dparm
2005 Audi S4 saloon 6MT

Out: Castrol SAF-XO
In: Motul Gear 300





Now that the weather has warmed up, my shifting is much improved over the stock fluid using the Gear 300; however, the cold-weather shifting - << freezing - was still just as bad. I've heard people say, at least for the STI's, that RL NS gear oil is the bees knees. Have you considered this as a good GF-5 gear oil for your S4? Also, did you notice any change after switching to Motul?

I put recently Motul Gear Power 75W80 in BMW. Phenomenal fluid so far. Shifts in morning (50’s) better than HPL MTL 75W I dumped.
Will see winter, but so far, best shifting in BMW I ever had, and that includes Redline D4 which is darling among E90 owners.

 

[GenSan]

2024 Rav4 Prime XSE
36,000 miles
OUT: 1.8 quarts OE Toyota WS
IN: 1.8 quarts Amsoil SS ATF (ATL)