Operation Section Typical Example LP Engine Typical Example Diesel Engine 10. Inspect the engine compartment for oil, coolant and fuel leaks. Typical Example LP Engine Typical Example Diesel Engine 12. Observe the engine coolant level in the coolant recovery bottle. With the engine cold, maintain the level to the COLD mark. If the recovery bottle is empty, also fill the radiator at the top tank. Typical Example LP Engine 11. Measure the engine crankcase oil level with the dip stick. Maintain the oil level between the MAX. and MIN., (or FULL and ADD) notches on the dip stick. 13. Observe the fuel level gauge after starting the truck. Add fuel if necessary. Typical Example 64