Fluorescent Oil Additive Method

1. Clean the engine with a suitable solvent to remove all traces of oil.
2. Drain the engine oil crankcase and refill with recommended oil, premixed with Diesel Engine Oil Dye 164-R3708 meeting Ford specification ESE-M99C103-B1 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.
3. Run the 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. A clear, bright yellow or orange area will identify the leak. For extremely small leaks, several hours may be required for the leak to appear.
4. If necessary, pressurize the main oil gallery system to locate leaks due to improperly sealed, loose, or cocked plugs. If flywheel bolts leak oil, look for sealer on the threads.
5. Repair all leaks as required.