When to autozone today to pick up some gear oil for my 300sd's rear differential... I was told that 85w 90 would work.. I wasnt sure so I thought I might ask you guys if this weight would be ok for the rear differential....

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I believe what you got is correct. Make sure the car is level when adding oil.

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-Randy Wakefield

1969 220D 4 speed (parts car)
1976 280C
1976 280S
1981 240D 4 speed (parts car)
1982 300D
1983 300TD (Ivory)
1983 300TD (gold)
1985 300TD (gray)
1987 190D 2.5
1970 280SEL (sold)
1977 240D 4 speed (sold)
1974 280 (rusted to death)
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1927 Chevy 4 door sedan
1938 Chevy 2 door sedan
1950 Willys Jeepster
1955 Studebaker President 4 door
1977 Ford F250
1979 Glastron 17'
1948 John Deere A
1960 John Deere 2010
1979 Satoh S650G
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2000 Bichon (Doby)

The viscosity is correct,just make sure it is API GL-5 level.

Will 75w 90 work as well? Have yet to read the label (redline) to determine gl-5


edit: found; will work

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