Checked the rear differential oil today. Level seemed to be down a little - with little finger in the hole to first joint oil just touching the tip. The oil in the differential was very red (almost looked like ATF, but smelled like 90W), not golden brown like most 90W I've seen.
Is this MB specific gear oil? Can I use regular old 90W?
Should I just top off or completely drain and refill? I have no idea whne the last time the differential oil was changed. The fill plug came out easily, I'm sure the drain plug will too.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.