[murrayf]

Which is better type and brand to use



thanks

 

[DaveF]

My final drive runs cooler and quieter with synthetic gear oil as opposed to the non-synthetic.



It's probably a toss-up which brand is best. I'm using Mobil 1 synthetic gear oil.

 

[philbrewer]

Many use the Mobil 1 synthetic oil.

 

[Cobram]

Mobil one synthetic too. It's such a small difference in price for the application size there's no reason not to use synthetic.



Well, save one. If a bike has been sitting for a long time (decades for many of the CX's and GL's out there), the diff should have a good flush. Best way to do this is to buy the cheapest stuff you can find, and change it every couple hundred miles a couple of times. When the fluid drains the same color it went in, then you can do the swap over to full synthetic.

 

[marshallf3]

Mobil 1 Synthetic here as well.