Pre-OP

Oil, Lubricants, Fuel, Emissions, Filters, ETC...

What does API Stand for?

American Petroleum Institute

What does #1, #2, #3 point to in the API Service Symbol “Donut”?

#1- Performance Level

#2- Viscosity Grade

#3- Energy Conserving:

What is Viscosity?

The measure of an oil’s thickness and ability to flow at certain temperatures; Fluid resistance.

What Does SAE Stand For?

Society of Automobile Engineers

In the example ‘15w40’, what does ‘15’ represent?

Cold-temp viscosity

In the example “15 w 40” what does ‘40’ represent?

high-temp viscosity/ operating temp

What does the “S” category mean and represent in API?

Service; Gasoline

What does the “C” category mean and represent in API?

Commercial; Diesel

What is a Micron?

A metric unit of length (one millionth of a meter)

What are the two main causes of wear on a machine?

Dirt and Heat

What are the two types of cooling system a machine could have?

Air-Cooled System and Liquid-Cooled System

What is LPG Gas made of?

Butane and Propane

What is Ether?

Cold Weather Starting Fluid

Diesel vs. Gasoline

Diesel- Runs off of compressed air and self-ignites in engine; no spark plugs. Low RPMs, More Torque, better MPG, Diesel engines last longer

Gasoline- Runs off of mix air and gas and use spark plug to create an explosion. Higher RPMs, Burns faster, Cheaper

What is the purposes of a filter?

Remove contaminants

What is DEF?

Diesel Exhaust Fluid- precisely mix of urea (32%) and de-ionized water(67.5%). Reduce NOx emission in diesel engine.

What is the Freezing Point of DEF?

12 degrees F

What is SCR?

Selective Catalytic Reduction- after treatment system, removes NOx from engines emissions.

What is EGR?

Exhaust Gas Recirculation- routes potion of exhaust gas into the intake manifold.

What is VGT?

Variable Geometry Turbocharger- regulates the charge pressure and drive EGR system.

What is Coolant?

A liquid used to cool down engine. Contains glycol, de-ionzed water, and additives/ inhibitors.

What are some functions of coolant?

prevent overheating, prevent freezing, prevents electrolysis, lubricates water pump seal.

What is SCA?

Supplmental Coolant Additives

What is the freezing point of water?

32 degrees F