Toyota Supra 1997 Owner's Manual page 130

The diluting ingredients evaporate out
when the vehicle is then driven at high
speeds, as on an expressway, making it
appear that oil is excessively consumed
after driving as 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 essen-
tial that the oil level be checked regularly.
Toyota recommends 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 the oil level
check, see "Checking the engine oil level"
in Chapter 7–2.
122
Brake system
TANDEM MASTER CYLINDER BRAKE
SYSTEM
The tandem master cylinder brake sys-
tem is a hydraulic system with two sepa-
rate sub–systems. If either sub–system
should fail, the other will still work. Howev-
er, the pedal will be harder to press, and
your stopping distance will be longer.
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 reserve
vacuum for one or two stops – but no
more!
CAUTION
!
R Do not pump the brake pedal if the
engine stalls. Each push on the
pedal uses up your vacuum re-
serve.
R Even if the power assist is com-
pletely lost, the brakes will still
work. But you will have to push the
pedal hard—much harder than nor-
mal. And your braking distance will
be longer.
ANTI–LOCK BRAKE SYSTEM
The anti–lock brake system is designed to
automatically prevent lock–up of the wheels
during sudden braking or braking on slip-
pery road surfaces. This assists in providing
directional stability and steering perfor-
mance of the vehicle under these circum-
stances.
The anti–lock brake system becomes op-
erative after the vehicle has accelerated to
a speed in excess of approximately 10 km/h
(6 mph). It stops operating when the vehicle
decelerates to a speed below approximate-
ly 5 km/h (3 mph).