[Mg-mmm] quick question on rear dif

[DB35PA at aol.com]

I've been warned by several, not to over-fill the rear dif of my PA. I  
question the dip stick as it appears to have been "home made" and I'm not sure  it 
is correct.
 
Using my Wakefield Lubrication Wall Chart... it says CASTROL Swanshot(?)  
Gear oil... "One and a half pints of oil will be required for complete  
replenishment after draining". 
Is this my answer, or is it part of the problem?
 
In cups, Ozs., pints or some unit of measure, starting from a completely  
drained unit... how much is enough... but not too much?
 
Thanks 
Don B.
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