engine oil
#1
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engine oil
stock 7.4 merc engines,is straight 40w still the oil to use??
or is synthetic multi grade,10/30 or 10/40 or even 20/50 oil better
or is synthetic multi grade,10/30 or 10/40 or even 20/50 oil better
#2
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#3
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thanks,was looking for a quick/short answer
#4
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