man, if you did it before, why not again? that job's too easy to cheap out with mystery juice.

i know, i sold bars leak when i worked in parts stores and even saw it work once. but most of those head jobs were more involved that a volvo 240.

there's a spec for head bolt stretch but i never replaced head bolts on those as stretch didn't seem to happen. and i don't think retorque is required. if you want to do it, do it cold. 1 at a a time, in torque order.