Fuel dilution occurs when gasoline or diesel fuel infiltrates your engine’s crankcase and dilutes, or “waters down,” the motor oil. Technically, “oil dilution” is a more fitting term, but “fuel dilution” is industry-standard terminology.
What causes fuel dilution?
Several factors can lead to fuel dilution:
• Dirty or leaking fuel injectors
• Excessive idle time
• Incomplete combustion
• Low engine temperatures
• Frequent short trips
• Worn piston rings/excessive blow-by
See the January AMSOIL Magazine for more information.