X595 and Amsoil

[pilot172]

I've been using Amsoil 15W-40 Heavy Duty and Marine oil in my X595 Yanmar diesel. The 15W is too high for my climate (Wisconsin). I do run it a lot in the winter for snow plowing. I believe the Amsoil premium 5W-40 API CJ-4 is the best choice from Amsoil to use for my tractor. Let me know if something else is a better choice. I'm just not sure about the CJ-4 as my tractor is a 2003, but I believe its backwards compatible. I'm only interested in Amsoil as I've been using it for years with good results.

 

[Copperhead]

You do not require CJ-4. that formulation was primarily for diesel emissions after treatment equipped motors. It is backward compatible though. But that being said, take a very strong look at Amsoil's ACD 10w30/30w, which is CI4+ rated. It is a straight 30w, but qualifies as a 10w30 for cold weather flow properties with a pour point as good. It is one stout oil! No viscosity improvers to shear making it one of the toughest oils available. It actually can hold up better under tough working than a 15w40 or 5w40. Those oils need a pretty good amount of viscosity improvers to make them meet the cold flow and grade requirements. ACD has none of that. VI is what breaks down in an oil, and some shear easier than others. If you can avoid the VI, you eliminate the shearing issues. The 5w40 is good, but for winter I would seriously consider the ACD 10w30/30. If it can do a good job in 13/14/15L heavy diesels, year round, I think it can do fine for you. And it is cheaper! Always a plus.

http://www.amsoil.com/lit/databulletins/g27.pdf