I put 100 ltrs of Asda's finest unleaded in the boat yesterday. We had a long day out with it with no issues. Today we had a 5knt tootal up the river for a cream tea with my 77yo Father.
On the way back the Icommands chirped in and read 'Water in fuel'. I cancelled them and 10mins later up it came again. Anyway, I hauled the boat out and brought it home. I first removed the engine filter and poured the contents into a jamjar, it was half water!!. I then removed the inline filter, that was half fuel and half brown sludgy sh*t.
I know that aluminium tanks can produce condensation, but not brown, sludgy sh*t. I emptied both filters, replaced them, ran it up and checked the in-line filter again, it was fine.
It's not good to pay £100.9/Ltr to buy crap to put through one's pride and joy.