Old 2-stroke mix
I helped a friend by doing a service on a Yam 15 2-stroke recently. Got the motor running nicely on new fuel and transferred a quantity (~15 litres) of old fuel to my portable tank. This fuel is at least 2 years old and is pre-mixed with oil. It has developed a brownish tint.
I was intending to mix this old fuel with 35 litres of new fuel and add it to the inboard tank on my RIB (which is 50l capacity). The engine is a 90 Yam 2-stroke which has automatic mixing so there will be some overdosing of oil.
Is this a reasonable, practicable way of using the fuel or should I try and dump it? If so, how?