OIL REQUIREMENTS - 10 ENGINE OIL RECOMMENDATIONS Use of Supplemental Additives Engine oils meeting Crusader Engines’ recommendations already contain a balanced additive treatment. The use of supplemental additives which are added to the engine oil by the customer are unnecessary and may be harmful. Crusader Engines does not review, approve or recommend such products. Synthetic Oils Synthetic engine oils may be used in Crusader Marine Engines. Synthetic oils must meet the Engine Oil Requirements for Classification and Viscosity listed below. The use of synthetic oil does not permit the extension of oil change intervals. Engine Oil Requirements The following chart shows the recommended oil viscosity for various ambient temperature ranges: Prevailing Ambient Temperature
Recommended A.P.I. Classification & Viscosity
Above 50˚F
SAE 15W-40 “GF-4/SM”
Below 50˚F
SAE 5W-30 “GF-4/SM”
IMPORTANT: The use of oils which contain “solid” additives, non-detergent oils or low quality oils specifically are not recommended. WARRANTY NOTICE: Crusader Engines reserves the right to refuse warranty on part(s) and/or engine(s) damaged by using improper fuels and engine oils. Oil Change Intervals (Common) Crankcase oil and oil filter change - Recommended intervals:
28
•
Initial oil change - 1st 60 days or 25 hours of operation, whichever occurs first
•
Regular oil changes - Every 50 hours of operation or 120 days, whichever occurs first
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