General
1-11
SHOP SIPPLIES
Lubricants and Fluids
Periodic lubrication helps ensure a long
service life for any type of equipment.
Using the correct type of lubricant is as
important as performing the lubrication
service. Although in an emergency the
wrong type is better than not using one,
The following section describes the
types of lubricants most often required.
Make sure to follow the manufacturer’s
recommendations for lubricant types.
Engine oils
Engine oil for the four-stroke UTV
engine is classified by two standards:
the American Petroleum Institute (API)
service classification and the Society of
Automotive Engineers (SAE) viscosity
rating Standard classification. The API
and SAE information is on all oil
container labels. Two letters indicate
the API service classification. The
number or sequence of numbers and
letters (10W-40SG for example) is the
oil’s viscosity rating. The API service
classification and the SAE viscosity
index are not indications of the oils
quality.
In the API service classification
standards, the first letter in the
classification S indicates that the oil is
for gasoline engines. The second letter
indicates the standard the oil satisfies.
The classifications are: MA (high friction
applications) and MB( low frication
applications).
Note:
Refer to Engine Oil and Filter in Chapter
Three for further information on API,
SAE classifications.
Always use an oil with a classification
recommended by the manufacturer, Using
an oil with a different classification can
cause engine damage. Viscosity is an
indication of the oil’s thickness. Thin oils
have a lower number while thick oil have a
higher number. Engine oils fall into the 5-to
50-weight range for single-grade oils. Most
manufactures recommend multi-grade oil.
These oils perform efficiently across a wide
range of operating conditions. Multi-grade
oils are identified by a W after the first
number, which indicates the low-
temperature viscosity. Engine oils are most
commonly mineral (petroleum) based, but
synthetic and semi-synthetic types are used
more frequently. When selecting engine oil,
follow the manufacturer’s recommendation
for type, classification and viscosity.
Greases
Grease is lubricating oil with thickening
agents added to it. The National Lubricating
GreaseInstitute (NLGI) grades grease.
Grades range from No.000 to No.6, with
No.6 being the thickest. Typical
multipurpose grease is NLGI No.2. For
specific applications, manufacturers may
recommend a water-resistant type grease
or one with an additive such as
molybdenum disulfide (MoS2).
Brake fluid
Brake fluid is the hydraulic fluid used to
transmit hydraulic pressure (force) to the
wheel brakes. Brake fluid is classified by
the Department of Transportation (DOT).