What kind of damage can occur without pre/post lube systems?
When engines sit for long periods of time, oil drains back to the engine sump leaving surfaces of moving parts free of a protective film of oil. Kim Hotstart prelube systems circulate oil to these critical surfaces in the engine prior to starting the engine. These same systems will continue to circulate oil throughout the engine after the engine is shut down (postlube). This keeps the bearing surfaces cool. If oil was not still flowing over these surfaces the temperature on the surfaces would continue to get higher due to residual heat stored in the mass of the engine. These elevated temperatures would char the thin coating of oil. Postlubing cools these surfaces down slowly after the engine stops.
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