What is everyone's choice for differential grease?

[Gilbey]

What is everyone's choice for differential grease? And does anyone have an idea of capacity for 2007 Sunl (Chinese)250 CC ATV as I do  not have the owners manual with specs. Thanks for the input.

[davefrombc]

I  can't tell  you  specifically  for that quad , but most  use  75/90w ( synthetic)  or  an  80/90w hypoid gear oil.  A few  use  40w motor  oil.. Take the fill  plug out  and check the smell of the oil.  Gear  oil has a distinctive smell  as  compared to engine  oil.  I would recommend  going with the  75/90 synthetic  if it is in fact  gear  oil in the differential. 

[Admin]

Topic title edited to be more descriptive: What is everyone's choice for differential grease?

[Jeremy Morris]

the level of oil is where it starts to trickle out of the fill plug unless it has a small bolt on the side of the differential case in the middle with a brass or aluminum washer

[Thomas Giles]

Lucas

[Charlie Garcia]

Lucas 

[grizzlyGuy687]

Lucas 75/90W

[ZZ71]

AMSOIL

Synthetic ATV/UTV Transmission & Differential Fluid