gn3

I'm planning on changing my diff fluid. The dealer has fluid for $30/L, they told me it's rebranded Castrol 85-90. I can't find it anywhere. What else can I use? Or should I just fork over $60 and use the MB stuff?

Thanks,

gn3

Ok, so I went back to get the MB oil and, a different tech, told me to use 80-90 castrol instead of the 85-90 stuff they had. So I found some Castrol Hypoy C 80W-90? And thoughts? I feel like the dealer doesn't know what to use in their own cars.

Chappy

Personally, I would go with the MB fluid. The diff doesn't take much in the way of volume, so the cost difference isn't that significant.

Always use the factory recommended fluids.