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Old 10-06-2019, 12:44 PM   #22
Senior Member
Join Date: Jan 2015
Location: New York
Posts: 877
Default Re: ROTELLA 15W 40 Oil

Originally Posted by jb-ob View Post
Many reasons for 'black' oil but most over looked is the fact if your driving your Model A without an air filter, sucking up all the turbulent dirt off the highway.

Boat owners have 'clean' oil much longer...
I have an air and oil filter.
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