Mercury makes Quickleen, which is an additive that you mix 1 oz to 6 gallons of gas. Bomb makes Carbon Guard and I believe its ratio is 1 oz to 4 gallons. I'm not familiar with Yamahas Ring Free. I'm sure they are all similar products. I use Carbon Guard in my Mariner 200 EFI just because I had been using it in my previous Johnson. Bombardier also makes a synthetic blend oil (Ram FICHT) for their FICHT engines. It also has a carbon-fighting ingredient in it. I know Merc also makes a special oil for their Opti that may do the same. Bomb also makes a 100% synthetic, but it's pretty pricey. Anyway the synthetics produce less carbon and more lubing. I also run the Ram FICHT oil and buy it out of the dealers bulk at $15/gal. I have to supply my own jug.
I forgot to mention in my post on your previous thread that water contamination in the oil is another engine killer. Remember that oil & gas will float on water, so it will be right there where your pickup can get to it. So be careful when you wash out your tank compartment or leave it open in a rain.
Also, there is a good de-carb procedure at the bottom of this thread.
http://pub5.ezboard.com/fbbcboardfrm10.showMessage?topicID=247.topic Pretty simple. However if you have a carbureted engine, it's a little more involved. In that case, here's a good procedure.
http://www.boatsetup.com/decarb_carb.html Good luck and keep up them PM checks!
Reggie
[This message has been edited by TX Champ (edited 01-20-2003).]
