Diff / Trans lube ?

[Digger 66 3,476]

Tearing into the trans /diff lube change on my Raider 10 & have a few ?'s 

1) the diff / trans seems to be one casting so should I assume they " share " lubricant ?

2) From the rear , there is a drain at the bottom , a couple inches up on the clutch / brake side there is what appears to be a level check / fill boss with plug 

3) there is a fill under the seat with a dipstick . 

Which one is the level check ? 

Also is any GL-5 lube OK to use ? 

 

Fill & check here ? or .... 

 

 

 

Here ? 

 

 

 

 

 

Is this lube OK ??

 

 

 

 

Thanks for any info , folks .

 

-Gene

Edited July 21, 2013 by Digger 66

[stevasaurus 22,229]

Yes, the differential is in the trans case with the rest of the gears.  I would use the dip stick...but it should be the same level as the side check level plug.  Yes, that oil is OK to use.

[Digger 66 3,476]

Excellent !

Thank you , Sir .

[woodbird007 16]

Piggyback question. If you switch to synthetic trans lube do you have to be extra fussy about flushing out the transmission case. If so, with what?

Thanks