Water - Coolant Contamination
Coolant contributes to a large percentage of all engine failures.
The presence of coolant (glycol) or water in an engine or transmission lubricant, indicates contamination from a number of possible sources. With coolant contributing to a large number of engine breakdowns, the failure to detect contamination can be extremely costly.

For example, bearing manufacturers have indicated that as little as 0.2% water contamination in oils can halve anti-friction bearing life.
Increased levels of sodium indicate the leakage of coolant inhibitor chemicals into the oil. The sodium is left behind in the oil even if the water evaporates.

Causes Effects
Low operating temperature Equipment failure
Defective seals High viscosity
New oil contamination Poor lubrication
Coolant leaks Corrosion
Improper storage Increased operating temperatures
Cracked cylinder head Acid formation
Weather -moisture Reduced additive
Product of combustion Harmful sludges and deposits
Recommendations
Check head bolt tension
Check head gaskets
Inspect heat exchangers and oil coolers
Check for correct operating temperatures, thermostat settings, etc
Evaluate equipment suitablility for applications
Avoid intermittent use if possible
Change oil and filters
Check for external moisture sources

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