Originally Posted By: waltywalt
Does Quaker State Ultimate Durability have the lowest noack number now for sopus oils. I know Pennzoil Ultra did before it and pp went to gtl base stock.
Probably not, when I looked at the PDS online if I recall correctly the NOACK was higher than PP. Thats ok though, Quaker State Ultimate Durability is an excellent oil at a great price. Running it in the Uplander now with no complaints.