CYLINDER HEAD GP 2141667 - Caterpillar

Synthetic base oils are acceptable for use in Cat engines. These oils must meet the performance requirements that are specified by Cat for the engine compartment.Synthetic base oils generally perform better than conventional oils in the following two areas:
Synthetic base oils have improved flow at low temperatures, especially in arctic conditions.
Synthetic base oils have improved oxidation stability, especially at high operating temperatures.Some synthetic base oils have performance characteristics that enhance the service life of the oil. However, Cat does not recommend the automatic extension of oil drain intervals for any type of oil, whether synthetic or non-synthetic.Oil drain intervals for Cat engines can only be adjusted higher (longer interval) after an oil analysis program that contains the following data:
Oil condition, oil contamination, and wear metal analysis (Cat S O S Services oil analysis)
Trend analysis
Fuel consumption
Oil consumptionRefer to the "Extended Engine Oil Drains and Warranty" article in the Foreword of this Special Publication.