Quote:
Originally Posted by Brian Carlton
Delo 400, Delvac 1500, or Rotella are all good choices. The weight is 15W-40 which is a bit too heavy for winter starts..........the reason to stick with one of the synthetics.
|
Agreed, 15W40 is best and will start well down to 25*F in my chart on the bottle. 5W40 is only really recommended for temps at 10*F and less. You should be fine with 15W40 now and Rotella is a good one.
All diesel engine oil should be "C" rated followed by a second set of letters and numbers, such as "CH-4/CI-4". The higher C rating, the better oil protection and resistance to oil burn off as well as avoiding dry starts!
I also add Lucas Viscosity improver and this has made my engine idle a little faster slightly and my oil pressure at idle a little higher. Less engine noise after sitting for several days also would tell me it helps to cling to metal parts and avoid dry starts.