Originally Posted by BstMech
Make sure your car is out in the open air and not near where the smoke is going to get in the house.
sounds like the voice of experience
,I have made that mistake before.And as far as putting it in the oil "yes" you can, but only for 15-30min.Do not drive the car /truck or run over about 2000rpm,just let it get up to operating temp. I have used it to clean up the engine after blown head gasket. Immediately change the oil and filter and plan on changing it again in 1000 or so miles, worked great.