(From Tohatsu): For your 4-stroke outboard, you should use Genuine Tohatsu FC-W 4-Cycle Oil. Tohatsu FC-W 4-Cycle Oil is NMMA Certified and has been specially formulated to handle the higher RPM’s that outboards are subjected to, as well as special rust inhibitors to combat the harsh operating conditions of the marine environment. Genuine Tohatsu Oil reduces friction & wear and ensures the internal components are properly lubricated for optimum performance. If Tohatsu 4-Cycle Oil is not available we recommend using an NMMA Certified FC-W 4-cycle oil formulated for use in outboard engines. Look for oils bearing the FC-W trademark.
Your Tohatsu 4-stroke outboard is equipped with an Engine Oil Warning Lamp (except for 2hp, 2.5hp & 3.5hp). When the warning lamp is off, it indicates that sufficient oil pressure is present. If the warning lamp is on (red light is on) or blinking on/off, immediately shut down your outboard and check the oil level. Replenish as needed. If the oil level is at the appropriate level and the light continues to stay on or blink, consult your local dealer for assistance (do not use your outboard until a dealer has corrected the problem).
You may notice the engine oil warning lamp come on when you first start your outboard. This is normal and should go off after a few seconds. On cold starts, the lamp may stay on longer due to the oil being thicker. If so, stop the engine and restart and the lamp should go off quickly. If the warning lamp does not go out after 4-8 seconds, stop the engine and consult your local dealer.
