Engine Oil for Air-cooled Diesel Engine

Oil Selection:

· Grade: Use engine oil with the correct API performance category (e.g., CF, CF-4, or higher as specified) for diesel engines.

· Viscosity: Select the right SAE viscosity grade based on your climate. Common choices are 15W-40 (for a wide temperature range)

Consequences of Incorrect Oil Level:

· Too Low (Insufficient Oil):

 · Overheating & Increased Friction: Leads to severe engine wear and damage.

 · Catastrophic Engine Failure: Can quickly result in seized pistons or a thrown connecting rod.

· Too High (Excess Oil):

 · Aeration & Foaming: The crankshaft whips the oil, creating foam, which reduces lubrication and can cause low oil pressure.

 · Increased Pressure: Can damage oil seals, leading to leaks and potentially blowing out gaskets.

 · Higher Crankcase Pressure: Can force oil past piston rings into the combustion chamber, causing blue smoke and carbon buildup.