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Motul Oil Analysis Kit – Data-Driven Maintenance for Engines & Drivelines
Used oil analysis turns guesswork into evidence. By sampling engine, gearbox, transfer case or differential oil and sending it to the lab, you’ll receive a report on wear metals (iron, copper, lead, aluminium), contaminants (silicon/dirt, coolant, water, fuel dilution), additive health (TBN for detergency, TAN for acidity) and viscosity changes. Trends over time reveal bearing wear, dust ingestion from a leaking intake, injector issues, coolant ingress from failing gaskets, or extended-drain success. For overland rigs and tow vehicles, analysis helps tailor intervals to actual duty, not a generic schedule.
Sampling is simple: warm the vehicle, draw a mid-stream sample into the sterile bottle, label with mileage/hours, and ship using the kit’s packaging. Avoid contamination by using clean tubing and gloves; do not sample from the first or last drips. Record oil brand/grade for accurate interpretation. Once results arrive, compare to your baseline and act: abnormal silicon suggests air filter or intake leaks; fuel dilution points to short trips or injector issues; metal spikes may reflect break-in or a component fault. Track multiple reports to build a clear picture of your vehicle’s health.
In this section: Browse all categories • What Analysis Measures • What to Sample • How Often • Sampling Steps • Related • FAQ
What Analysis Measures
| Metric | Meaning | Why it Matters | Action |
|---|---|---|---|
| Wear Metals | Iron, copper, lead, aluminium | Component wear & bearing health | Investigate spikes vs baseline |
| Contaminants | Silicon, water, coolant | Dirt ingress or leaks | Fix intake/seals; flush |
| Fuel Dilution | % fuel in oil | Thins oil, reduces film strength | Check injectors, driving pattern |
| TBN/TAN | Additive reserve/acid build-up | Oil life remaining | Adjust drain interval |
| Viscosity | Shear or thickening | Protection at temp | Consider grade/brand change |
How Often?
- Engines: at each change until baseline is known, then every 1–2 intervals
- Heavy towing/off-road: sample more frequently
- Transmissions/diffs: after initial service, then periodically
- After repairs: sample to confirm successful fixes
What to Sample
- Engine oil (petrol/diesel)
- Automatic/manual transmission fluids
- Transfer case and differential oils
- Note oil grade/brand and hours/mileage
Sampling Steps
- Warm up vehicle; shut down
- Use clean tubing/pump; draw mid-stream sample
- Label bottle with VIN/plate and mileage/hours
- Seal, pack, and ship per kit instructions
Related
FAQ – Oil Analysis
- Do I need multiple reports?
- Yes—trends matter more than a single snapshot.
- Can I sample cold oil?
- Warm oil suspends particles evenly, improving data quality.
- What if fuel dilution is high?
- Check injectors and usage pattern; shorten interval until resolved.
- Are universal averages useful?
- They provide context, but your baseline is best for decisions.
- Will analysis extend oil change intervals?
- Often—if TBN/viscosity support it and contamination is low.
- Can I analyse gear oils too?
- Yes—reports highlight wear metals and contamination in diffs/transfer cases.
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