Test Procedure - Fluorescent Oil Additive Method
WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Before installing new gaskets or oil seals, ensure that the source of the leak is clearly established.
If the oil leak cannot be identified clearly by a visual inspection, perform an Ultraviolet test:
- Clean the engine with a suitable cleaning fluid (for example, brake cleaner).
- Drain the engine oil and refill with recommended oil, premixed with Engine Oil Dye or equivalent. Use a minimum 14.8 ml (0.5 ounce) to a maximum 29.6 ml (1 ounce) of fluorescent additive to all engines. If oil is not premixed, fluorescent additive must first be added to the crankcase.
- Run engine for 15 minutes. Stop the engine and inspect all seal and gasket areas for leaks using a 12 Volt Master UV Diagnostic Inspection Kit or equivalent. A clear bright yellow or orange area will identify leak. For extremely small leaks, several hours may be required for the leak to appear.
- As necessary, pressurize the main oil gallery system to locate leaks due to incorrectly sealed, loose or cocked plugs. If the flywheel bolts leak oil, look for sealer on the threads.
- Repair all leaks as necessary.