Originally Posted by Hermes1
No has to be Canola oil.
A mechanically untrained friend is a manager at Jiffy Lube. I showed him how to change spark plugs for the first time. So sad.
He reports most of the oil drained from customers cars looks like thin black coffee.
His customers opt for the CHEAPEST oil/filter combos. The courtesy refill oil (top off oil) for the $30 oil change is straight guage 30 weight.
It's just appalling what people do with oil changes. Then you have these bone-heads telling people not to use synthetic oil. Just talking hot=air out the behind is what they're doing.