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simple oil change question
I know that it is better to change oil in an engine once it has reached operating temperture, or at least that is what I have always been told to do. Curiously every boat I have owned has had several warnings that you must do it that way.
Anyway - is there any harm in changing the oil on a cold Cummins?
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05 3/4 Laramie QC G-56
06 commander Limited
01 TJ
83 CJ-8
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