Sometimes what happens in a boat transfer is so much exictement the type of oil is overlooked entirely and mixing 2stroke oil is a big gamble - many times it forms a gel that the pump can no longer spray inside the motor either blocked nozzles or the small oil lines get plugged with the gel product - it is like when you smear jelly on the outside of the jar, flush it all with kerosene to restore the pumping action and then choose and stay with oil from a reputable supplier, when you run your first bottle empty cut off the front and leave it in the glove box so you can always get the same type.