Thread: Oil?
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Old 05-09-2014, 12:58 PM   #9
twowheeler   twowheeler is offline
 
Join Date: Feb 2014
Posts: 46
30 weight oils have had to eliminate much of the protective qualities oils had due to emissions and cat converters. This is why most people run 1040 or 1540 since they still have the good stuff. 15w40 has the best protective packages.
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