All of the above
keep engine surface clean
reduce friction and prevent water
seal gaps between pistons and cylinders
remove heat to keep engine cool
what are the primary functions of motor oil?
quality ingredients and exceeding industry standards
As you have learned, not all motor oils are the same. whst are two things that make
them different
detergents
what additive keeps engines clean by:preventing contaminants and deposits from
collecting on surfaces.
dispersants
what additive keeps engines clean by: keeping contaminants suspended in oil
engine oil performance category
resource conserving
SAE viscosity grade
what information does API symbol or donunt provide?
winter
what does the "w" in viscosity grade (e.g. 5w-30) stand for?
all of the above
maximum wear protection
more resistant to oil breakdown
provides maximum deposits protection in high temperature conditions
provides maximum sludge protection at low temperatures
what are the benefits of synthetic motor oil compared to conventional oil?
driving in dusty condition
driving in extreme hot or cold temp.
frequent short trips
hauling and towing
which are consider servre driving conditions
owners manual based om driving habits
what should you rely on to determine whrn to change your oil
all enging exhibits wear over time
synthetic improves engine protection by resisting oil breakdown
engines are cold at start up and not while running
synthetic provides maximum protection in ectreme hot and cold temp conditions
if oil is thicker, engines lose power snd efficiency
synthetic has greater resistance to oil thickening to maintain engine efficiency
myth
you cant mix conventional and synthetic oils
engine seals become brittle and shrink causing leaks
contain special seal conditioners to help leaks
more rapid rate of engine wear