OIL AND LUBRICANTS
Engine Oil
Engine oil and lubricants such as transmission and power steering fluid lose their
ability to flow and lubricate. This is called viscosity breakdown. When viscosity
breakdown occurs in engine oil, the oil loses its ability to lubricate, it can’t
transfer heat away from hot internal engine parts, and it can’t keep dirt in
suspension. The result is premature engine wear and ultimately, over time,
engine failure.
Transmission Fluid
Transmission fluid lubricates, cools, and acts as the medium through which
hydraulic pressure is produced within the unit. When transmission fluid is
neglected and left inside the transmission for long periods, it gets burnt and loses
its viscosity. The result is premature transmission wear and failure.
Power Steering Fluid
Power steering fluid is nothing more than hydraulic fluid (like transmission
fluid). It is the medium through which hydraulic power steering assist is
achieved. Regular checks of the level and condition will ensure that the power
steering pump and rack or steering box (if so equipped) stay in good shape. If a
fluid leak ensues, then the levels get low, heat and friction build up, and the
pump, rack, or steering box start to grind themselves to pieces.
Drivetrain components such as differentials, transfer cases, and power takeoffs
typically use transmission fluid, motor oil, a special limited slip semi-synthetic
lubricant, or gear oil. Each manufacturer uses different fluids as per their
application. The lubricants in these components should be checked for level,
color, and consistency. A milky color means that water or moisture is in the
component and, if left in this condition, will damage the unit. Fluid change
should be done immediately and the cause for moisture contamination found and
repaired.
Engine Coolant (Antifreeze)
Engine coolant is designed to do four things:
- Absorb heat from the engine and carry that heat to the radiator where it is