The new API CJ-4 oils
are made for high-performance diesel engines designed to meet 2007
on-highway exhaust emission standards. API CJ-4 oils exceed previous
performance requirements and are specifically designed to protect
emission control systems, help comply with emission standards, reduce
engine wear, and control piston deposits and oil consumption.
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API CJ-4 oils are also
engineered for use in previous model year engines and intended
to maintain oil drain intervals when used in conjunction with Ultra-Low
Sulfur Diesel Fuel
(15 ppm maximum sulfur). As always, you should follow engine manufacturers'
recommendations for specific application guidelines for all engine
oil products.
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