gas mixture for 6 gallon fuel tank

[basshunter101]

Am new boater with first outboard other than electric and, want to get fuel mixture right. I have a rebuilt 1997 Force 40 horse on boat. Can someone please tell me how much oil to add to 6 gallons of gas? Thanks.

 

[MH Hawker]

If its 50:1 then its 16 oz of oil

 

[basshunter101]

Thanks Hawker, greatly appreciated!

 

[GA_Boater]

:welcome: basshunter. When you find the proper ratio, use one of these to measure the TC-W3. Makes it easy to top of the tank. http://www.iboats.com/2-Cycle-Oil-M...91672152--session_id.542808669--view_id.56142

I believe your Force will use a 50:1 gas to oil mix or 15.36 ounces for 6 gallons for the first full fill up.

 

[Frank Acampora]

Your Force requires a 50-1 ratio. The easiest way of measuring is to add one pint of TCW-3 oil to six gallons of fuel. This actually will give you a 48-1 mix but the ease of mixing far outweighs the slightly extra cost of excess oil. The Force is definitely an old school engine and very tolerant of excess oil. Thus, when in doubt such as adding oil to a partial tank, if you can not get an accurate fuel measurement err on the rich side.

Your Force also uses surface gap plugs. these tend to easily foul with low speed running and trolling. Carry an extra set of plugs and a plug wrench. At the first sign of low speed stalling or hard starting, change the plugs. The old plugs can be cleaned with a green Skotchbrite pad. They are re-useable any number of times. I have plugs over 15 years old with hundreds of running hours and they still function perfectly.

 

[Sea Rider]

If it's a complete engine rebuilt as when out od the box for the first time will need 25:1 mix for some hours while breaking in the engine, then after run 50:1 mix.

Happy Boating

 

[robert graham]

Like they said plus consider installing a fuel/water separator and use a fuel stabilizer like Stabil....these items can save you a lot of fuel regaled grief!....good luck!

 

[UncleWillie]

When mixing fuel, add the Oil first, and then add the fuel. The incoming fuel will mix the oil at the bottom of the tank.
If you add the Oil last, it will sit on the bottom of the tank and will take a few day until it becomes mixed naturally unless you pick up and vigorously invert the tank a few times to get the Oil mixed.
Driving a full tank of gas to the ramp will not mix the Oil into the fuel. Full tanks don't have any slosh factor.

 

[Sea Rider]

With portable tanks have had no issues whatsoever mixing both ways for years, the order of the factors does not alter the final product, probably could have an issue with internal tanks if you don't follow engine mixing procedures recommendations.

Happy Boating