Synthetic oil
I have a 2005 Dodge 1500. 5.7L Hemi. It has 73000 miles on it. I have kept the oil changes and maint. Very current. I am thinking of changing to a synthetic oil for my next oil change. Is it wort...
Forum Discussion
wintersun wrote:
Most synthetics for diesel are not available in a 15W-40 grade which is also what is needed for temperatures above 0 degrees. A 5W-40 oil in temperatures above 0 degrees is not going to provide nearly as good protection in warmer temperatures. One is already sacrificing lubrication performance with a multi-grade oil with polymer shear which is most evident when oil is forced into the main bearing journals of an engine.
You might want to do some research on oil viscosity.
