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      07-25-2011, 01:55 AM   #15
BobsM3Coupe
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Drives: M3 Coupe
Join Date: Nov 2009
Location: California

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Quote:
Originally Posted by elp_jc View Post
The right amount is 1.25L . Maybe you meant that you have to buy 3 liters at a time, which is indeed true.
I actually used about 1.4L after draining it overnight, and spilling a little when full (can't prevent that). Bottom line is you can do TWO differential oil changes with 3 liters, but since most dealers won't use the expensive oil unless squealing is severe, I opted to use Royal Purple Maxgear 75/140 instead (same spec as stock), and problem solved. And yes, I do my own maintenance .
Thanks. Yes, I meant to say that the lube comes in half liter bottles, and 3 are needed. And I see each liter now costs about $40.00 each.