According to the workshop manual I have the tightening torque for the M18 (hex) plugs around the block are 70nm/51.4ft-lb, sounds a bit high to me..?

Can anyone confirm this, specifically, the plug above cyl #3/main oil gallery where you'd normally fit an oil temp sender/adaptor.

Also, as the OE plugs are steel and the temp adaptor (LMA067) is brass, does this make a difference to the tightening torque..?

I'm all torque today, eh..?

 

Should be fine, 51ft-lb isn't that tight for something of that size.

 

Thanks (again) Paul, just wanted to get it right in order to sort this seepage from adaptor..