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Re: Castrol Tection 15W-40 oil in a JD 2 cylinder
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Posted by Jon Hagen on April 14, 2007 at 11:40:55 from (75.104.56.247):
In Reply to: Re: Castrol Tection 15W-40 oil in a JD 2 cylinder posted by jdemaris on April 14, 2007 at 11:10:39:
JD, my oil information came from a JD shop forman a couple years ago,who said that with the new "low ash" multi viscosity oils that top ring sticking and buildup are no longer a problem, when I asked him if I still needed to use single weight oil in my 4020. He said the JD 15-40 multiweight was fine for any JD, no matter how old If you notice, most any newer multi weight series 3 diesel oils meet the Detroit diesel CD II spec which eliminated the need for a special low ash oil for them.
I question your friends comment that multiweight synthetics do not have the same polymer viscosity improvers as multiweight mineral oil The additive package between synthetic and mineral oil is nearly identical, with only the thin base oils being different.
A multi weight is a thin oil to give you good cold start lubrication,with the viscosity improving polimer additive that thickens as the oil heats up.
A lot has changed in the 16 years since your 1991 D D oil buletin, within the last 5 years, almost all diesel oil uses low ash additives that eliminate the ring sticking problem, so no special oil is required. I checked that out very carefully, as I still run several 2 cycle Detroit diesel powered machines, and was very aware of their special oil requirements.
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