Is 70-Year Old Quaker State Motor Oil Still Good?

Is 70-Year Old Quaker State Oil Still Good?
Is 70-Year Old Quaker State Oil Still Good?
 

Testing 70-year old Quaker State Motor Oil for performance and comparing it to Quaker State 10W-40 conventional motor oil. The oil is tested in a running engine, for film strength, for cold temperature performance, and is tested by independent oil lab…

 
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