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5
ENGINE
COOLER
WARM-UP / BYPASS
94 to 98 percent of the oil flow
bypasses the heat exchanger.
Oil from engine
bypasses back into filter
and returns to engine
2 to 4 percent oil flow
to cooler warms lines
and reduces thermal shock
Figure 3 -
Oil Path During Engine Warm-Up
FULL FLOW
100 percent of the oil flows
to the heat exchanger.
ENGINE
COOLER
Figure 4 - Oil Path at Operating Temperature
