I need some help! I have just purchased a small fishing boat and with it have been given a engine. The engine is a Mariner 4M with the serial number 6EO S 122703, I would really appreciate it if someone could let me know how old the engine is and what the right fuel mix needed is (including what type of fuel I need to use) If anyone can help and offer any other insight into this type of engine it would be greatly appreciated. <br /><br />Cheers Tim