Purpose
This procedure helps ensure that all critical vehicle fluids—engine oil, coolant, brake fluid, power steering, transmission, and hydraulic systems—are inspected, tested, and topped up per manufacturer standards for performance and safety.
General Fluid Inspection Steps
- Park the vehicle on level ground and engage the parking brake
- Use clean dipsticks and proper PPE (gloves, goggles)
- Identify each fluid reservoir location and manufacturer specs
- Check fluid levels and color/clarity indicators
- Record any abnormal readings or contamination signs
Category-Specific Guidelines
Engine Oil
- Check oil when engine is cool and vehicle is level
- Ensure level is between MIN and MAX marks on dipstick
- Look for discoloration, particles, or fuel dilution
- Top up with OEM-recommended oil grade
Coolant/Antifreeze
- Inspect reservoir level and radiator (only when cool)
- Verify color is consistent (green, orange, pink)
- Check for rust, oil contamination, or bubbles
- Refill with proper coolant mix if needed
Brake Fluid
- Locate reservoir on master cylinder
- Check level and color (should be clear/amber)
- Test moisture content using strips
- Use DOT 3, 4, or 5 per manufacturer guidance
Transmission Fluid
- Check with engine running and warm (if applicable)
- Use dipstick or inspection port to assess level
- Verify color (pink/red) and odor (no burning)
- Add fluid only if in the safe range
Power Steering Fluid
- Inspect cold and hot level indicators
- Fluid should be clear or light amber
- Check reservoir cap and lines for leakage
Hydraulic Systems (where applicable)
- Monitor reservoir level and pressure sight glass
- Check for aeration, foaming, or odor
- Replace if dark, dirty, or outside viscosity range
Documentation and Best Practices
- Log all fluid inspections and changes
- Tag or label reservoirs if fluid is topped up or replaced
- Maintain consistent fluid brands and types
- Investigate abnormal usage or contamination trends