Is it time
for a
Tune-up
Yet?

It's been a couple of years since you
had the car tuned up but it still seems to
be running fine. Leave well enough
alone, right?

WRONG!

On most vehicles today, malfunctions
may be camouflaged by computers
whose function is to keep the engine
running as efficiently as possible as long
as possible. When they no longer can
compensate for mechanical discrep-
ancies, they may just fail. The vehicle is
disabled. Periodic diagnostic checks and
maintenance can prevent this sometimes
disastrous situation.

Symptoms of engine trouble on most
vehicles today are subtle. It's not easy to
tell if your car needs a tune-up because
the symptoms are masked by com-
puterized controls. Preventive diagnosis,
done periodically, can keep your vehicle
running trouble-free for years. Short of
that, if you do detect a change in your
vehicle's performance, make a note of it
and report it to your technician for further
diagnosis and corrective measures.