Can I use GM part number 12345982? What do I fill it up to like half way up the window? Do I have too suck all the old oil out or can I just add new on top?
There is a drain plug on the bottom of the whipple but that might get messy on the car. I'm currently running GM oil in mine as my small town is dominated by GM dealerships.
I assume that picture was taken with the blower not running correct? Mine reads full when its off but when its running you almost don't see anything in the sight glass but that's because its being flung all over the blower case.