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Pennzoil

reviewed by Drew99GT

Pennzoil

Drew99GT
09/16/2008

Pennzoil 5

The wax buildup is a good thing - keeps the parts separated better.

Thicker is always better, so wax HAS to be the best!

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steveopevo commented 270 days ago.
Are you an expert technician?

indiecds commented 232 days ago.
Thicker is better is a myth!
The reason that oil viscosities have gotten thinner is because bearing clearances have become smaller. Using thicker oils will interfere with oil flow and the oil pressure will increase. In a worn engine it may be okay to increase the viscosity of the oil because the bearing clearances have become larger.
http://www.nordicgroup.us/oil.htm
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By the Numbers