For the Evinrude 25 outboard motor, the recommended oil mixture is typically 50:1 for pre-mixed fuel, which means you should use 2.5 ounces of oil for every gallon of fuel. If your model is a newer direct injection engine, it may use a different oil system, so it's essential to consult the owner's manual or check with a dealer for specific requirements. Always use high-quality 2-stroke oil designed for outboard motors to ensure optimal performance.
The 1979 model, 25 hp Evinrude requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
50 to 1
I have a 1988 25 hp LS Evinrude pull start and I weighed it at 123 lbs.Retired auto tech
For the 1990 model, 25 hp Evinrude outboard, use a 50:1 ratio, roughly 1 pint of 2 cycle oil, to six gallons of fuel.
The oil/petrol mixture is 50:1 for the evinrude motors
My motor says 100 to 1 right next to the fuel connection....
An Evinrude 25hp outboard, 1985 year model, requires a 50:1 fuel, to 2 cycle oil ratio. This is roughly one pint of 2 cycle oil, to six gallons of fuel.
A 25 hp Evinrude, model number E25RCNB, would be a 1982 year model.
About $900 to $1400 depending on condition
one pint of oil per 6 gallons of gas 50:1
The 25 hp Evinrude outboard has been designed to run a 50:1 ratio, for earlier models, and 100:1 for late model engines. Pre 1965 models run a 24:1 ratio.
The late model 25 Evinrude suggests operating on a 100:1 ratio. I prefer the old time tested 50:1 ratio, one pint of two cycle oil, to six gallons of fuel. I have never seen an outboard powerhead failure, due to running a 50:1 mix.