Supertech motor oils & filters

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Alex, Patman is right. That oil filter study is a few years old. They may have been the same when the study was done, but not any more. Motorcrafts are not Pureones. They have the same shell, the same silicon anti-drainback valve, but the filter element is made of a different material and is not as densly packed. Cut open a Purolater Pureone, a Purolater Premium Plus, and a Motorcraft, you will find the Motorcraft is really more like a Premium Plus. Still a decent filter, Joe
 
When I spoke to a tech guy at Champion Labs a week ago he told me that Ford does not specify whether the bypass vavle should be on top or bottom. They merely say it must have a bypass valve. In fact, the factory installed filter in my truck was a Champion Labs filter with the valve on the bottom, or closed end of the filter.

Mikep
 
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