Ok.. here's the best I could find from another thread (24ft/lbs).
just snug with a ratchet. Using a torque wrench, tighten to 10 ft.lbs.
In a crossing pattern first. Then I tighten them to 24 ft.lbs., doing
the bottom left, then the top right (remember the alignment pins?) and
then continued in a crossing pattern. NOTE: The best spec. I could find
for these bolts was 16 ft.lbs. But it still leaked. My BMW Mechanic
friend said M8 bolts could go only as high as 26 ft.lbs. Also depending
on the length of the socket extension you use could also affect the
torque wrench settings. I would investigate this completely and use a
setting particular to your setup.