Type-44: Tightening turbo oil lines - Bentley mistake?

[Ameer Antar]

This really doesn't seem to make sense, but the Bentley (as well as the Haynes) says to tighten the bolts for the turbo oil lines to 18 ft-lbs. These are the little M6 bolts that actually bolt into the turbo. I looked up the torque chart for M6 and even w/ class 12.9 hardware, you can only get about 12 ft-lbs out of 'em. Some how I doubt that'll work. Any experience or BTDT's regarding the proper torque? Also how about the torque for the other sides of the lines... one is M6 and bolts to the aluminum oil filter housing, and the other is M8 and bolts into the block. I can't find any spec for either. Thanks for the help.

-Ameer