To help avoid transmission problems, various
transmission association consumer bulletins advise that
customers should be aware that driving their auto, truck
or SUV under "severe" conditions as listed in the owner's
manual can cause extra wear and tear on the transmission.
For instance, relatively low mileage transmissions that
are regularly used in city or stop and go conditions are
subject to much higher wear than transmissions of the same
mileage that are used under normal or primarily highway
conditions. It is important to note that it is not necessarily
the mileage on a transmission which determines probable
wear and a greater probability of your auto, truck or SUV
needing a transmission repair. Rather, it is the number
of times the transmission has been run through its start-up
and shift cycles that determines probable wear.
Many other seemingly normal driving conditions
can effect transmission life and a higher incidence of repair.
Things like extreme climate conditions (either cold or hot),
mountainous driving, motoring problems which are associated
with snow or ice and slippery conditions (and a host of
other conditions) can take their toll and cause more frequent
need for repair.
As you can see from the limited examples
above, many motorists do not fit into the ideal or 'normal'
driving condition category. If you operate your vehicle
under more extreme conditions, servicing your transmission
yearly seems to be an industry average. Under the most extreme
conditions, it may be advisable to service your transmission
even more often and you may also want to install an external
transmission cooler for additional protection.