Posts: 25
Registered: ‎06-11-2010

new diesel oils

Just wondering if anyone has been using the new diesel engine oils . . .the CK-4. I know it replaces CJ-4 oils . . .and that the FA-4 diesel oils on only for on-highway trucks. Either product has more anti oxidation additives to handle the higher engine temperatures of Tier 4 diesels. Any feedback from guys using the new oil would be appreciated.