Dodge 18681 Viper - Manual (Page 151)

Engine Oil Viscosity Chart
The proper SAE viscosity grade of engine oil should be
selected based on the following recommendation and be
within the operating temperature shown in the engine oil
viscosity chart. Synthetic Engine Oils
There are a growing number of engine oils being pro-
moted as either synthetic or semi-synthetic. If you choose
to use such a product, use only those oils that meet the
American Petroleum Institute (API) and SAE viscosity
standard. Follow the service schedule that describes your
driving type.
Materials Added To Engine Oils
It is not necessary to add any materials to crankcase oils
for most types of vehicle operation. The addition of
materials containing antirust or antiscuff additives can be
beneficial under certain conditions. These include: infre-
quent operation, short trips, and during break-in after a
major engine overhaul. The manufacturer’s Engine Oil
Supplement is recommended for these situations.
Disposing of Used Engine Oil
Care should be taken in disposing of used engine oil from
your vehicle. Used oil, indiscriminately discarded, can
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