Changed the differential oil today to Mobil 1 75W-90 on the 85D. Seemed to have a noticable, smoother effect.

BTW, the differential drain and fill nuts take a 14mm allen.

Also, blew compressed air in to the fill hole to drain out the old oil as much as possible. I ended up getting a 1/2" drive hex bit set from AZ that had 12, 14 & 17mm bits for $9.99. This is the way to go.

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the sooner you start... the sooner you'll get done If it ain't broke, don't fix it.. Its always simpler to tell the truth...
2007 Honda Accord EX
2007 Honda Accord SE V6
96 C220
97 Explorer - Found Another Home
2000 Honda Accord V6 - Found Another Home
85 300D - Found Another Home
84 300D - Found Another Home
80 300TD - Found Another Home
Previous cars:
96 Caravan
87 Camry
84 Cressida
82 Vanagon
80 Fiesta
78 Nova
Ford Cortina
Opel Kadet
68 Kombi
Contessa