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Old 08-03-2021, 04:29 PM   #21
Cat320
Montana Master
 
Join Date: May 2006
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Posts: 1,700
M.O.C. #5751
Quote:
Originally Posted by mlh View Post
...Do what the manufacturer says...
Agree, most will give a mileage or annual, which ever comes first....regardless of synthetic or not.
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