Quote:
|
I went with Synthetic Mobil1 85W90 on both mine and the rear diff is quiet, no noise.
|
I agree. I changed the differential fluid on my 400E at 100,000 and used Mobil 1 synthetic. I never had an issue with the differential over the next 156,000 miles. Maybe the dealer has a better fluid, but it would be hard to imagine you could beat Mobil 1. You will have to get either a 17 mm hex key or hex socket to get the filler plug out.
I think I will change mine, now that you raised the issue.
__________________
1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles
|