Why should one have oil filter:

I. Core Function: Fuel Purification

1. Trapping Contaminants

   • Fuel (gasoline/diesel) may contain impurities introduced during extraction, transportation, or storage:
     • Dust, metal debris, rust (from tanks/pipelines)
     • Water, microorganisms (common in diesel)
     • Gum deposits (from oxidized fuel deterioration).
   • The filter physically blocks particles >15-30 microns (diesel) or >10 microns (gasoline) using filter media (paper/synthetic fibers).

2. Protecting Precision Injection Systems

   • Fuel injector nozzles in electronically controlled engines have ultra-fine apertures (≈0.1mm); diesel common-rail systems operate at pressures up to 2,000+ Bar.
   • Contaminant ingress causes:
     • Clogged nozzles → poor atomization → reduced efficiency/loss of power
     • Scored precision components → fuel leaks → pressure loss/stalling

     Repairs can cost thousands (e.g., a single diesel injector may exceed $150).

II. Severe Consequences of Failure

Case study: Diesel engine high-pressure pump failure due to filter neglect; repair costs ≈30% of engine value.

Maintenance Recommendations

1. Replacement Intervals
   • Gasoline vehicles: 25,000-40,000 km (or per manual)
   • Diesel vehicles: 30,000-40,000 km (shorter for agricultural/construction equipment).

Related Product: