Heavier oil for high mileage engine?
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Heavier oil for high mileage engine?
2003 Impala 3.4L 286K garaged in GA
Should I switch from the recommended 5w-30 to 10w-30 or 10w-40? I was thinking the the engine has certainly worn a bit and the clearances have increased. Don't know the oil pressure yet.
Thanks.
Should I switch from the recommended 5w-30 to 10w-30 or 10w-40? I was thinking the the engine has certainly worn a bit and the clearances have increased. Don't know the oil pressure yet.
Thanks.
