Suggested maximum speed in each gear
Downshift to a lower gear if the engine is not running smoothly, or if you need to accelerate. Do not exceed the maximum suggested speed (shown below) in any gear. For level road driving, use the highest gear suggested for that speed. Always observe posted speed limits, and drive according to the road conditions, which will ensure safe operation. Do not over-rev the engine when shifting to a lower gear as it may cause engine damage or loss of vehicle control.

See also:
Three-way catalyst
The three-way catalyst is an emission control
device installed in the exhaust system. Exhaust
gases in the three-way catalyst are burned at
high temperatures to help reduce pollutants.
WARNING
...
Anti-freeze
In the winter when it is anticipated that the
outside temperature will drop below 328F (08C),
check the anti-freeze to assure proper winter
protection. For additional information, see “Engine ...
Tongue load
Keep the tongue load between 10 - 15 percent of
the total trailer load or use the trailer tongue load
specified by the trailer manufacturer. The tongue
load must be within the maximum tongue load ...
