Thread: M1 5W-40 first time
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Old 11-13-2006, 01:51 PM
nhdoc nhdoc is offline
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Location: Nashua, NH
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Quote:
Originally Posted by WD8CDH View Post
Isn't the 0W-40 a CF oil and the 5W-40 a CI-4 oil?
My bottle of Mobil 1 5W-40 reads CI-4, SL/CF Certified.
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