1996 Chevy Blazer V6 All Wheel Drive Automatic 234 km miles
I have always changed the oil every 3,000 km, and have owned this truck since new. It is beginning to knock when cold, but when warm, the knocking goes away. I run it on 5W30 as per manufacturer.
I am wondering if I should put in "winter" oil, synthetic oil, 10W30, or an oil for high mileage vehicles. My GM dealer says that oil is the thickest when it is cold, so he thinks it is just that the truck is now 11 years old, and the knocking is to be expected. I don't think so.
have the same problem?
Tuesday, December 4th, 2007 AT 2:14 PM