Section I. PURPOSE
is supplied to the cylinder walls helps the piston rings
8-1. General (Fig. 8-1). The lubrication system In an
make a good seal to reduce blowby (para3-6).
automotive engine supplies a constant supply of oil to all
moving parts. This constant supply of fresh oil is
8-2. Oil as a Lubricant. The primary function of engine
important to minimize wear, flush bearing surfaces clean,
and remove the localized heat that develops between
oil is to reduce friction between moving parts (lubricate).
moving parts as a result of friction. In addition, the oil
Friction, in addition to wasting
Figure 8-1. Typical Engine Lubrication System.