The Texas Department of Transportation
;
(TxDOT) operates a large fleet of on-road and
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off-road equipment. Consequently, fleet
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maintenance procedures (specifically preventive
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maintenance such as oil changes) represent a
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significant cost to the agency. TxDOT currently
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uses a preventive maintenance schedule
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dependent on simple variables such as vehicle
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miles or operational hours logged. However,
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with newer engines and vehicles that are
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equipped with onboard diagnostic systems,
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there is the possibility of tracking these
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parameters or performance measures over time
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and correlating them to oil degradation levels to
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determine the need for preventive maintenance.
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ensure public access to scientific information.
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