Oil Change Torques

Crank it down until it strips out, then back it off a quarter turn :)

Other than the James Sweet reply, I can throw in that most drain plugs seem to torque to about 33 ft-lbs. Even on Hondas, which are notorious for stripped pan threads, 33 is the spec.

Mike

for V70 it is 35 Nm - should be the same for C70...

remember torque of a bolt (or nut) is determined by the stress in the bolt AND the frictional resistance of the sliding parts. A clean dry bolt and nut or housing will need to be torqued much more than a oily one. This is one area where a torque wrench can do a disservice. I once visited a auto manufacturer who was shearing off bolts on a suspension component. They were trying to meet the torque spec but the bolts would shear before the torque was reached. They blamed ppor quality bolts...Turns out the spec called for unlubricated components whereas they were applying a release agent before assembly. On the other hand dry steel on dry aluminum has very high friction so a torque wrench may reach torque before the bolt is even truly tight.

Before you rely on a torque wrench see if the spec mentions bolt cleanliess and always use common sense...with practice you can feel how much friction is present and make allowances for that in setting the torque (with or without a torque wrench).