Flashcards in Transportation Deck (19)
List the designations for the top performance level in the NLGI automotive classifications system for chassis and wheel bearing greases.
Wheel bearings - GC
Chassis - LB
What is a quick field test used to measure detergency and dispersancy of used internal combustion engine oils?
Oil spot (or patch) test. A crude test where oil is filtered through a patch. If particles are concentrated in the center of the patch, it indicates that water or anti-freeze may be impairing dispersancy.
What are the words that are found on the ILSAC (API) starburst?
American Petroleum Institute Certified for Gasoline Engines
What are the three designations found on the API donut?
API service classification, SAE grade, and energy conserving level
What are the most current API service classifications?
An SAE 30 engine oil is approximately __________cSt or _____ SSU.
Approximately 100 cSt (at 40° C) or 500 SSU
What is the primary difference between Ford, Chrysler and GM automatic transmission fluids?
The original Ford fluid (pre-1979 vehicles) contained no friction modifier.
Current (Mercon) and GM (DEXRON III) contain friction modifiers. Chrysler MOPAR 7176 (now ATF +3) is formulated to be compatible with friction plate materials in Chrysler transmissions. The newest fluid Ford Type B is semi-synthetic.
What do the “S” in SJ and the “C” in CF-4 stand for?
“S” stands for “Service" in spark engines
“C” stands for “Commercial” in compression engines
What does the “W” signify in 10W-30?
“W” Winter - It indicates an engine oil's viscosity at low temperatures.
In most engine applications, what would exhibit lower oil consumption, SAE 40 or SAE 15W- 40?
What does API stand for?
American Petroleum Institute
What does ILSAC stand for?
International Lubricant Standardization and Approval Committee
What does SAE stand for?
Society of Automotive Engineers
What does OEM stand for?
Original Equipment Manufacturer
What does ATF stand for?
Automatic Transmission Fluid
What are the four strokes of a four stroke cycle engine?
What is HTHS? What type of application is it considered important?
High Temperature High Shear
Multi-grade engine oils
What are three important properties of an ATF?
ATF (Automotive Transmission Fluid)
Low temperature fluidity