Bolt Torque?

You know the bolt on a 2004 620, underside of the engine next to the oil drain plug and the sensor/screen, the one you never need ot take out? Well I took it out on accident. Anywho...I am getting a new crush washer from Ducati Seattle, but I am curious if anyone knows the torque spec on that? Seattle stated 15 - 20 ft lbs and blue locktite. That seems low to me...as when I removed it, it was short of a miracle.

Anyone with some hard evidence or shall I go with the 15 - 20 ft lbs?

Thanks As Always...