yup im a newbie. premix or self mixing?

[junior440]

i just pulled a 1990 bombardier out of a barn. its been sitting for 6 or 7 years so i drained all the fluids and gave it a little tune up. but i need to know if this thing self mixes the fuel or if i need to know a ratio to mix the gas at. as i noticed the oil tank right above the gas tank, so i figured this meant it was self mixing? sorry to sound so dumb.

 

[Dr Honda]

It has oil injection.

You need a good quality API-TC oil. DO NOT use a TC-w3 "Outboard" oil in a seadoo. (it won't live long)