SAE 80W90 gear oil is recommended for Mercury outboards up to 75hp. The oil protects the internal parts of the gear and provides protection against corrosion. We recommend that the gear oil be changed once a year, or at least every 100 hours (every 50 hours in salt water). Refer to your engine manual for more information.
SAE 80W90 gear oil is recommended for Mercury outboards up to 75hp. The oil protects the internal parts of the gear and provides protection against corrosion. We recommend that the gear oil be changed once a year, or at least every 100 hours (every 50 hours in salt water). Refer to your engine manual for more information.