What should be added separately to the crankcase of a diesel engine during the fueling procedure?

The addition of oil to the crankcase of a diesel engine during the fueling procedure is crucial for maintaining engine health and performance. The crankcase is designed to hold engine oil, which lubricates moving parts, reduces friction, and helps to dissipate heat generated during engine operation. Adding oil separately ensures that the engine has adequate lubrication, which is essential for protecting components such as the crankshaft, pistons, and bearings from wear and tear.

While fuel additives can improve fuel performance and may be important for the overall functioning of the engine, they are not added to the crankcase; instead, they are mixed with fuel before being injected into the combustion chamber. Water is never added to the crankcase, as it can cause serious damage to the engine's internals and lead to corrosion. A temperature gauge is a valuable instrument for monitoring engine conditions, but it plays no role in the fueling or lubrication process directly.