Buick 1994 Roadmaster Owner's Manual page 86

I
NOTICE:
Don't drive in "2" (Second Gear) for more than 5
miles (8 km), or at speeds over 55 mph (88 km/h),
or you can damage your transmission. Use
@
or
"3" as much as possible.
Don't shift into "2" unless you are going slower
than 65 mph (105 km/h), or you can damage your
engine.
1 (First Gear)
This position gives you even more power (but lower
fuel economy) than "2." You can use it on very steep
hills, or in deep snow or mud. If the selector lever is
put in "1," the transmission won't shift into first gear
6
until the vehicle is going slowly enough.
NOTICE:
If your rear wheels can't rotate, don't try to drive.
This might happen
if
you were stuck in very deep
sand or mud or were up against a solid object.
You could damage your transmission.
Also, if you stop when going uphill, don't hold
your vehicle there with only the accelerator
pedal. This could overheat and damage the
transmission. Use your brakes or shift into "PYy
Park to hold your vehicle in position on a hill.
Limited-Slip Rear Axle
If you have this feature, your rear axle can give you
additional traction on snow, mud, ice, sand or gravel. It
works like a standard axle most of the time, but when
one of the rear wheels has no traction and the other
does, the limited-slip feature will allow the wheel with
traction to move the vehicle.
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