AMSOIL Synthetic ATF and SEVERE GEAR™ Synthetic Gear Lubes Provide
Maximum Protection for Severe Operating Conditions

There is much to be done before leaving for a vacation,
not the least of which is proper vehicle maintenance.
Most people are aware of the importance of changing
their motor oil, but many people overlook the importance
of changing the automatic transmission fluid and gear
lube. Proper engine and drivetrain maintenance are
equally important. After all, if the drivetrain fails, it
doesn’t matter how well the engine has been maintained.
Nothing ruins a vacation quicker than becoming
stranded in a remote area due to neglecting proper
fluid maintenance.
Although many motorists consider their everyday
driving habits to be normal, this is not always the case.
In addition, some vehicles are subjected to extreme
operating conditions such as snow plowing, hauling
heavy loads and towing heavy trailers. These extremes
put more stress on drivetrain components than just
driving back and forth to work. New vehicles such as
turbo diesel trucks and vehicles with V-10 engines
boast more horsepower and torque than their predecessors,
but differential designs have remained virtually
unchanged. Differentials today are subjected to severe
duty service and encounter more stress and heat than
was seen only a few years ago. Modern gear oils are
faced with the challenge of providing adequate wear
protection during severe service operating conditions,
while also providing maximum fuel efficiency.
Many people overstress their vehicles while on vacation.
It is not uncommon to see vacationing families driving
around in overloaded vehicles. The roof rack is
filled with equipment, the back seat is filled with bags
and the suspension is bottomed out. Some vehicles also
pull trailers or fifth-wheels with boats, and some of
these vehicles exceed their rated towing limits. As vehicle
stress increases, transmission and differential temperatures
rise and cause conventional lubricants to
thin, causing inadequate lubrication that can lead to
component failure.

Some vehicle manufacturers require the factory-fill
differential gear lube to be changed within the first
3000 miles, or the first 500 miles if towing, a fact not
known by many consumers. Because differentials go
through a break-in period and are not equipped with filters
like transmissions and engines, the gear lube must
be changed in order to drain the break-in wear particles.
These particles, if left in the differential, mesh between
the gears and cause gear or bearing wear or failure.
Recent studies show that most differential wear occurs
in the first 5,000 miles.
AMSOIL Synthetic Universal Automatic Transmission
Fluid (ATF) and SEVERE GEAR™ 75W-90 and 75W-140
Synthetic Gear Lubes (SVG & SVO) provide maximum
protection in demanding environments such as towing,
hauling and commercial use, providing increased lubricant
film protection and reduced wear at elevated temperatures.
Synthetic ATF and SEVERE GEAR™
Synthetic Gear Lubes are formulated for extended drain
intervals of up to 50,000 miles in severe service and
100,000 miles in normal service, or longer where specified
by the vehicle manufacturer.