I have an 03 yami f115 4 banger on an 186 sea hunt. The gas tank will hold 58 gallons of gas. Durring the summer I use the boat alsmost every weekend and about once a month in the winter. <br /><br />I have never used ring free before but I decided to get some. My question is should I use the shock treatment or the regular treatment. Also I think I have about 40 gallons in the tank, should I just mix to maintain based on what I think I have in the tank or fill it back up and then mix? I guess I want to know will it hurt any thing to mix a little strong or weak.
