Schedule
I
Is any of these true for your vehicle?
Most trips are less than
4
miles
(6
km).
Most trips are less than
10
miles
(16
km)
when outside
temperatures are below freezing.
The engine is at low speed most
of
the time (as in door-to-
door delivery, or in stop-and-go traffic).
You
operate your vehicle in dusty areas.
You
tow a trailer. (With some models, you shouldn’t ever
If
any
one (or more) of these is true for your driving, follow
Schedule
I.
tow a trailer. See the
Index
under
Towing
a
Trailer.)
Schedule
I1
Follow Schedule
I1
only
if
none of the above conditions is
true.
291
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