1999 Volvo Penta "WT" Models Workshop Manual, Page 261Get this manual
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Engine Specifications Valve Systems:
Engine Lubrication:
Type Oil Pump Normal Pressure, Warm Engine 10 PSI {86,65 kPal 600 25 PSI {172,37 kPal 2000 Approx8 qts(7,57 I); qts{8,51 I} with Ge