fuel mixture

[Fraserhouse]

1955 mark 55E mercury outboard. I have just redone external restoration. I am ready to start and run this motor. I would like to use Stihl oil for the gas mixture. Is this a good oil and should I use a 50:1 mixture. I have owned since 1963 and have not run it for 15 years. Should I do anything to be safe. Last tune-up was 15 years ago before I stored it. Thanks for any advice. Motor had previously little use. Thanks, John

 

[The Force power]

NO, use TC3 oil only! your motor will thank you

 

[roscoe]

TCW3 oil is for Water Cooled engines and works best with their engine running temps.

You could use 50:1, but most folks I know are using 25:1 or 40:1 to give the old girl a little extra lubrication.

The Stihl oil is for air cooled engines that run a lot hotter. That oil will not burn off properly in a cool running outboard motor.

Is the water pump still functional?