undestand that Quaker state & Penzoil are a brands under Shell. I tried to google for more info on this oil but the result of my search is rather limited. I cant even find the official spec of the oil.
There were some comment where the quality is similiar to SHU in some forum. If thats the case, i may move on to other oil instead cause SHU is rather sucks (tried it and change it at aroun 7K)...
Anyone from MCF use this oil before?