Guys (n girls). I filled my tank and jerry can with petrol in September when I was using the boat regularly. Unfortunately the weather, work and other commitments conspired against me and Ive not used it since.
Im pretty sure the fuel was the premium stuff but i wouldnt swear to it.
We read all sorts of horror stories about old fuel on social media, but we all know that social media can be a pit of misinformation and doom n gloom. Obviously id rather not break down a few miles out to sea for the sake of a hundred quids worth of fuel so does anyone have a definitive answer about the suitability of 6 month old fuel or any additives to make it suitable? .
If the fuel in the tank isn't the up to 5% ethanol premium type then I would suspect you will have water in the fuel after that long as well as reduced octane levels.Dont rely on the water separator helping out,mine didn't and I got water in my injectors cost me a fair bit to get it sorted and I dumped the fuel in the tank.This happened on a couple of occasions as I was using the non premium fuel at the fuel berth. I ended up removing the 100 litre stainless steel tank and converting to portable 25 litre plastic tanks that I could fill with Esso premium at my local garage which had Zero Ethanol.
No further issues and fuel was always good enough to start and run even after many months without use.
If it's a removable fuel tank I found that tipping it upside down on a workmate bench and leaving a while allowed the water to settle at the bottom then I could release the breather in the cap to let the water out.
Never had a problem after that.
Did have loads of water in the fuel off the old fuel barge one time though. 😒