3/19/2022 - 190.5 miles @ 30.6 hrs
First rear diff oil change
I went with Schaeffer 75w-140 XP measured in a 500ml syringe to exactly 250ml.
5mm allen to remove the drain
Jack up the front of the bike to help the fluid run out of the skid plate. The fluid was very metallic with no sign of water. I thought about ways to flush the diff with diesel or Marvens mystery oil but decided against it because I didn't have enough new diff fluid to be able to flush all the flushing fluid out. I'll just change the fluid again in 20 hours.
PITA-
After draining I attempted to insert the 6mm allen socket into the fill plug and the diff bracket wouldn't allow it to fully seat. Yes it was the only 6mm I had. I had to run to the store and pick up a allen key set and ordered a extra long set of metric allen keys from the net.
NEIKO 10077A 3/8” Drive Metric Extra Long Allen Hex Bit Socket Set | 10 Pieces | Sizes 3mm – 10mm | Shaft Length 6” | Premium S2 Steel Bits | Heavy Duty Cr-V Sockets | Exceeds ANSI Standards - Amazon.com
www.amazon.com
Replacing the drain plug can be a little tricky. MAKE SURE IT'S GOING IN STRAIGHT and start it by hand. Once it's started, I applied a little thread sealer to the last couple of threads. I was surprised at the amount of metal in this fluid and wish I would have taken a picture.
The allen pictured does not work properly. FYI
I wanted to add - 250ml filled the diff and it was running out slightly. I may have been on a little hill. I didn't bother with the bent wire trick because 250ml went in. I was surprised to see it run out. And yes, the amount of time I spent looking for the right allen key and driving to the store about 1.5 hrs........I'm completely sure all the fluid had drained. After opening the fill plug I raised the front of the bike again to be sure all the fluid came out.
I'll do the front today.