I had the same issue just before the boat was due to be lifted so a perfect opportunity to have a good look. It turns out that the whole unit was full of water and on close inspection the top of the unit was held on with mild steel screws! Hardly a good idea for something that is meant to be...
The reason swindeleries carry so many products is because there is not enough margin across 1 or a few products. To be successful you need a fantastic product that meets a high unmet need ie unique and be prepared to spend time and £'s marketing it , doubtful if this could be done 1 day a week...
A couple of years ago I acquired a new boat and noticed a significant faster anode wear than the previous boat, one difference that new boat did not have a galvanic isolator. I weighed the anodes, fitted a galvanic isolator and weighed the next set of anodes after exactly the same immersion time...
'Any Excuse'
Whenever I popped down to the boat my wife would say "where are you going" to which I would reply " just popping down to the boat" to which she would reply "any excuse," .......it stuck
I have D4 300's new in 2012 and now at 180hours. One engine drank a few litres in the first 20 or so hours then settled down and hasn't used any since. The other engine has never needed any top up. Faulty dipstick readings were part of the problem, I believe because the port engine dipstick was...
Time to change anodes again, there is a big difference in price between genuine VP supplied anodes and non genuine. Has anyone any experience of fitting non genuine VP anodes?