Im a little confused about how often and if at all I should use additives in my gas. I have a 200hp 1996 johnson and have been told many things about which gas and which additive to use. For the most part I use 89 octane and put in 2+4 additive, a little less then what the say on the bottle every time I fill up, also every third tank I put in carbon guard as the bottle says. I have been told by different mechanics different things<br />Use 87 and switch off every tank with 2+4 and carbon guard.<br />Use 93 and no additives.<br />Use 89 and once every 5 tanks or so use additives.<br />The reason I ask is the engine does not always run that great-but just had it checked and every thing was fine except for a loading problem, and was told probably the gas causing it. I was hoping someone could recommend what is working good for them or have some input to what may help. Thanks again in advance for any help
