Oil analysis shows what is happening inside a generator engine between services: wear metals, fuel or coolant contamination, soot, and oil condition. Sample consistently and trend the results for each engine.
What analysis finds in generators
Fuel dilution from light-load running, coolant from leaking seals or heat exchangers, dirt from intake leaks, and rising wear metals are common findings.
Sampling standby engines
Sample after the engine has run long enough to reach operating temperature, such as after a load test, from the same point each time.
Sampling prime-power engines
Continuous-duty engines are often sampled at a fixed hour interval. Trend the results to set change intervals within the maker’s limits.
Pair oil with coolant and fuel tests
Coolant and stored-fuel tests complete the picture for critical power and make maintenance reports more useful.
Frequently asked questions
Is oil analysis worth it on a standby generator?
It can reveal fuel dilution, coolant leaks, and wear on engines that rarely run, before a failure during an outage.
When should I take a generator oil sample?
After the engine has reached operating temperature, from a consistent sampling point.
What does fuel in generator oil mean?
Often light-load running or injector problems. Investigate with your service provider.
General maintenance information. Always follow your vehicle or equipment manufacturer’s requirements and the current product data. Questions? Email [email protected].
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