I purchased a 89' Bass Tracker PF16 over the winter. Ive had it out on the water 5-6 times and need to fill my tank but I don't know what type of mix to use. This is my first boat so bear with me on this. Feels good to be off the bank but a boat presents a whole new set of things to learn/experience.  I just don't wanna screw it up. Thanks

If you're asking fuel/oil ratio, it's 50/1

can/will you advise me on what to buy?? 

Ant marine rated 2 stroke oil will work. They sell measuring containers that will break it down for you. So if you know you are using 5 gallons of fuel, it will show you how much oil equals 50/1 

Out of curiosity, what difference does marine 2-stroke oil have to conventional 2-stroke oil?

Out of curiosity, what difference does marine 2-stroke oil have to conventional 2-stroke oil?

I would imagine the detergent additives. My chainsaw oil doesn't say it can be used in outboards. My outboard oil says it can be used in chainsws

I did find a helpful calculation tool for the 50/1mix http://www.csgnetwork.com/marineoilfuelcalc.html

If you want to be totally sure, just take the serial # off the evinrude outboard, call an evinrude dealer give him the serial # and I'm sure they will be happy to help you out with the yr of the motor(just in case it is a  different yr than the boat) and the fuel to oil ratio to use.

For the oil, you want to make sure it carries the TCW-3 rating for all 2 stroke outboards.

16oz/1 pint oil to 6 gallons of gas for a 50:1 ratio. Any Evinrude made after 1964 uses that ratio. Also Evinrude recommends a minimum of 87 but suggests 89 octane for their motors. They say there are no benifeits of using a higher octane when using a TCW-3 oil.

I used TCW-3 OMC oil for ages.  I don't remember where I read it, but it was the most recommended. 

 

You can buy 1 gallon for 20 bucks at Wal-mart.

 

50:1 is your ratio.   If I'm lazy, I'll buy the Evinrude 16oz oil (3.XX a bottle) and just fill out at 6 gallons at a time.