
Failures that result from extended oil drain periods are not Caterpillar factory defects and therefore are not
covered by Caterpillar's warranty. In addition, failures that result from not using the recommended oil type
are not Caterpillar factory defects and therefore are not covered by Caterpillar's warranty.
Refer to the applicable Operation and Maintenance Manual for standard oil drain periods and to the
Maintenance Section, "Lubricant Specifications" of this publication for engine oil type and viscosity grade
recommendations.
To reduce the potential risk of failures associated with extended oil drain periods; it is recommended that
oil drain intervals only be extended based on oil analysis, and subsequent engine inspections. Oil analysis
alone does not provide an indication of the rate of formation of lacquer, varnish and/or carbon on pistons
and other engine surfaces. The only accurate way to evaluate specific oil performance in a specific engine
and application that utilizes extended oil drain periods is to observe the effects on the engine components.
This involves tear-down inspections of engines that have run to their normal overhaul period with extended
oil drain intervals. Following this recommendation will help ensure that excessive component wear does not
take place in a given application.
NOTICE
Light loads, low hour accumulation, and excessive idling
time can contribute to excessive water in the crankcase oil.
Corrosive damage, piston deposits and increased oil
consumption can also result. If oil analysis is not done or
the results are ignored, the potential for corrosive damage
and piston deposits increases. Refer to the appropriate
Operation and Maintenance Manual for guidance.
Note: Failures that result from extended oil drain periods are not warrantable failures, regardless of use of
this recommended procedure. Failures that result from extended engine oil drain periods are considered
improper use under the warranty.
Aftermarket Products and Warranty
NOTICE
When auxiliary devices, accessories or consumables (filters,
oil, additives, catalysts, fuel, etc.) made by other
manufacturers are used on Caterpillar products, the
Caterpillar warranty is not affected simply because of such
use. Failures that result from the installation or usage of
other manufacturers auxiliary devices, accessories or
consumables, however, are not Caterpillar factory defects
and therefore are NOT covered by Caterpillar's warranty.
Caterpillar is not in a position to evaluate the many
auxiliary devices, accessories or consumables promoted by
other manufacturers and their effect on Caterpillar
products. Installation or use of such items is at the
discretion of the customer who assumes ALL risks for the
effects that result from this usage.
Furthermore, Caterpillar does not authorize the use of its