Whilst the Mercruiser outdrive oil is suggested for ideal functionality, there are other gear oils that may be used in Mercruiser outdrives. Some boat proprietors have had good results with synthetic gear lubes like Mobil 1, Royal Purple, and Amsoil. Using the appropriate oil in your Mercruiser outdrive is vital https://titusiuost.bluxeblog.com/59271534/a-simple-key-for-types-of-oil-goes-in-a-mercruiser-outdrive-unveiled