Heavy duty diesel oil for my commercial mower.

[Jetstreamz06]

I've always ran rotella or delo 15w-40 or syn 5w-40 in our commercial mowers. I've been reading a lot on the new diesel oils having to meet new standards etc and that some oils aren't rated for gas and diesel anymore. It has me kinda confused because I don't know a lot about all this. So does that mean I cant run some oils in my commercial mowers with gas engines once the new oil comes out?

 

[Rock_Hudstone]

According to some recent VOA's Rotella CK-4 dropped the SN gasoline rating and the specs have stayed more or less the same as the CJ-4
version, so for now still a good choice for OPE. (At least the 15w-40 and 10w-30 wt.) There is also Rotella straight 30wt.

However, other brands that retained the SN rating Zn and P levels are way down and I'd avoid them.

 

[Jetstreamz06]

Thanks for the info. It's confusing and hard to stay on top of all this.

 

[dave123]

Different direction 10w40 Amsoil ASF small engine oil is purpose built for commercial hard working small engines. I'd run full mfg oil interval and run UOA I think you would be happy with it .

 

[NH73]

Originally Posted By: Rock_Hudstone

However, other brands that retained the SN rating Zn and P levels are way down and I'd avoid them.
It seems as a lot of people don't consider the substitute anti-wear additive that replaces Zn and P.

 

[Rock_Hudstone]

Originally Posted By: Rock_Hudstone
According to some recent VOA's Rotella CK-4 dropped the SN gasoline rating and the specs have stayed more or less the same as the CJ-4

Correction: meant to say Rotella dropped the SM gasoline rating.

http://rotella.shell.com/products.html