Buick 1993 Roadmaster Owner's Manual page 303

Section A: Scheduled Maintenance
Services
Using Your Maintenance Schedules
This section tells you the maintenance services you
should have done and when you should schedule them.
Your Buick dealer knows your vehicle best and wants
you to be happy with it. If you go to your dealer for your
service needs, you'll know that GM-trained and
supported service people will perform the work using
genuine GM parts.
These schedules are for vehicles that:
carry passengers and cargo within recommefided
limits. You will find these limits on your vehicle's
Tire-Loading Information label. See "Loading Your
Vehicle" in the Index.
are driven on reasonable road surfaces within legal
driving limits.
a
use the recommended unleaded fuel. See "Fuel" in
the Index.
Selecting the Right Schedule
First you'll need to decide which of the two schedules is
right for your vehicle. Here's how to decide which
schedule to follow:
Schedule I
Is any one of these true for your vehicle?
a
Most trips are less than 4 miles (6 k m ) .
Most trips are less than 10 miles (16
k m )
when
outside temperatures are below freezing.
The engine is at low speed most of the time (as in
door-to-door .deliveryy or in stop-and-go traffic).
0
You operate your vehicle in dusty areas.
You tow a trailer.
If any one (or more) of these is true.for your driving,
follow Schedule I.
Schedule
I l
Follow Schedule 1 1 only if none of the above conditions
is true.
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