11 7
As an example, if a vehicle is used for re-
peated short trips, and consumes a normal
amount of oil, the dipstick may not show any
drop in the oil level at all, even after 1000
km (600 miles) or more. This is because the
oil is gradually becoming diluted with fuel or
moisture, making it appear that the oil level
has not changed.
The diluting ingredients evaporate out when
the vehicle is then driven at high speeds, as
on an express way, making it appear that oil
is excessively consumed after driving at high
speeds.
IMPORTANCE OF ENGINE OIL LEVEL
CHECK
One of the most important points in proper
vehicle maintenance is to keep the engine oil
at the optimum level so that oil function will
not be impaired. Therefore, it is essential that
the oil level be checked regularly. Scion rec-
ommends that the oil level be checked every
time you refuel the vehicle.
NOTICE
Failure to check the oil level regularly
could lead to serious engine trouble
due to insufficient oil.
For detailed information on oil level check,
see “Checking the engine oil level” on page
186.
Brake system
The tandem master cylinder brake system is
a hydraulic system with two separate sub
systems. If either sub system should fail, the
other will still work. However, the pedal will
be harder to press, and your stopping dis-
tance will increase. Also, the brake system
warning light may come on.
CAUTION
Do not drive your vehicle with only a
single brake system. Have your
brakes fixed immediately.
BRAKE BOOSTER
The brake booster uses engine vacuum to
power assist the brakes. If the engine should
quit while you are driving, you can bring the
vehicle to a stop with normal pedal pressure.
There is enough reserved vacuum for one or
two stops but no more!
