Using UV Light (Black Light)

2010 Mazda 5 Sport, 2.3 L, StandardSECTION Using UV Light (Black Light)
WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove any oil on the engine or transaxle.
    NOTE:
    • Referring to the fluorescent dye instruction manual, mix the specified amount of dye into the engine oil or ATF (or transaxle oil).
  2. Pour the fluorescent dye into the engine oil or ATF (or transaxle oil).
  3. Allow the engine to run for 30 min.
  4. Inspect for dye leakage by irradiating with UV light (black light), and identify the type of oil that is leaking.
  5. If no dye leakage is found, allow the engine to run for another 30 min. or drive the vehicle then reinspect.
  6. Find where the oil is leaking from, then make necessary repairs.
    NOTE:
    • To determine whether it is necessary to replace the oil after adding the fluorescent dye, refer to the fluorescent dye instruction manual.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.