Posted January 04, 2012 - 10:41 PM
2. Anybody know why the the aluminum cyl. Briggs engines idle at 1750 RPM and the cast iron and cast iron sleeved engines idle at 1200 RPM?
Posted January 05, 2012 - 08:20 PM
Posted January 06, 2012 - 09:29 AM
Posted January 07, 2012 - 10:54 AM
As a general rule of thumb though, the lower number only provides lubrication for a short period until the oil/engine warms up, so you are better off with a lower number in cool weather. Not sure why you would want to use a 15w-30 at all.