SEAL 6J3650 - Caterpillar

Caterpillar does not recommend the use of aftermarket additives in oil. It is not necessary to use aftermarket additives in order to achieve the engine's maximum service life or rated performance. Fully formulated, finished oils consist of base oils and of commercial additive packages. These additive packages are blended into the base oils at precise percentages in order to help provide finished oils with performance characteristics that meet industry standards.There are no industry standard tests that evaluate the performance or the compatibility of aftermarket additives in finished oil. Aftermarket additives may not be compatible with the finished oil's additive package, which could lower the performance of the finished oil. The aftermarket additive could fail to mix with the finished oil. This could produce sludge in the crankcase. Caterpillar discourages the use of aftermarket additives in finished oils.To achieve the best performance from a Caterpillar engine, conform to the following guidelines:
Select the proper Caterpillar oil or a commercial oil that meets the Caterpillar recommendations.
See the appropriate "Lubricant Viscosities" table in order to find the correct oil viscosity grade for your engine.
At the specified interval, service the engine compartment. Use new oil and install a new oil filter.
Perform maintenance at the intervals that are specified in the Operation and Maintenance Manual, "Maintenance Interval Schedule".