Oil analysis is one of the most powerful predictive maintenance tools available. By examining a small sample of used oil, a laboratory can reveal the internal condition of your engine, transmission, or hydraulic system — often detecting problems months before they cause visible symptoms.
Key Parameters in an Oil Analysis Report
Wear Metals (measured in parts per million): - Iron (Fe): Cylinder liners, crankshafts, camshafts, gears - Aluminum (Al): Pistons, bearings, oil pump housings - Copper (Cu): Bearings, bushings, oil cooler tubes - Lead (Pb): Bearing overlay material - Chromium (Cr): Piston rings, roller bearings - Tin (Sn): Bearing overlay, piston pin bushings
Contaminants: - Silicon (Si): Dirt and dust ingestion (air filter issues) - Sodium (Na) and Potassium (K): Coolant contamination - Water: Condensation or coolant leaks - Fuel Dilution: Injector problems or excessive idling
Oil Condition: - Viscosity: Should remain within plus or minus 10% of fresh oil specification - TBN (Total Base Number): Indicates remaining additive reserve - TAN (Total Acid Number): Indicates oil degradation - Oxidation: Measures thermal and oxidative breakdown
Interpreting Results: A single analysis provides a snapshot, but trending over multiple samples reveals the true story. Gradually increasing iron levels might indicate normal wear, while a sudden spike suggests a developing problem that needs immediate attention.
We recommend oil analysis every 250-500 operating hours for fleet vehicles and industrial equipment. The small cost per sample can prevent failures worth thousands in repairs.
