Quote Originally Posted by dvldoc View Post
CI-4 is the newer standard and basically replaces it. They both will work fine whatever fit's a persons budget. If your using a quality oil filter the good old mineral will still serve you well.

CH-4 – 1998 Reduced Emission Diesel Engine Service – The CH-4 category is intended to address the requirements for high-speed,
four stroke diesel engines to meet 1998 exhaust emission standards. CH-4 oils are specifically compounded for use with diesel fuels containing up to 0.5% sulfur. They can also be used in gasoline engines when combined with the appropriate “S” category when the vehicle or engine manufacturer recommends. CH-4 oils can replace those rated CD, CE, CF-4, and CG-4.


CI-4 – 2002 Severe-Duty Diesel Engine Service – The API CI-4 Service category describes oils for use in those high-speed, four-stroke cycle diesel engines designed to meet 2004 exhaust emission standards, to be implemented October 2002. These oils are compounded for use in all applications with diesel fuels ranging in sulfur content up to 0.05% by weight. These oils are especially effective at sustaining engine durability where Exhaust Gas Recirculation (EGR) and other exhaust emission componentry may be used. Optimum protection is provided for control of corrosive wear tendencies, low and high temperature stability, soot handling properties, piston deposit control, valvetrain wear, oxidative thickening, foaming and viscosity loss due to shear. API CI-4 oils can effectively lubricate engines calling for API CH-4, CG-4 and CF-4 Service Categories.
Got it sir! thanks! Will also check my owner's manual to see the minimum API requirement

anyway, im currently using Bosch filter, which I think is a notch better than Vic. Will try Baldwin next time