Probably the most comprehensive explanation and exacting knowledge sharing video we have seen for a long time. We have been going on about fuel return polishing via injection cooling and telling folks to sort their tanks first for ages. You guys just whacked the ball out the grounds with a great video. When we get back to the UK sometime we will be looking at this solution. Sail Safe Guys, Ant, Cid & the pooch crew.

Great video Dominic as always. Diesel has changed so much and thank you for the opportunity to explain how. As modern engines have got ever more technical the humble diesel quality has got worse. As discussed I look forward to a follow up in the Autumn when we can give some pointers on laying the boat up over winter. Thank you for all the kind comments below. If there are any questions feel free contact us or comment below and we will endeavour help. Have a good summer!

Never come across a more comprehensive and easy to understand explanation of diesel fuel ins-and-outs. Thank you very much!!

Extremely interesting insight into modern diesel fuel and it's weaknesses, etc. Very useful knowledge to have as a boat owner.

as we colloquially say: that´s a person who knows his shit. nothing like hearing the experts. great presentation!

Amazing! Thank you guys for posting such an informative and helpful video. And absolute respect for not attaching adds and making nothing out of it (apart from receiving a free versions of what we all now want!!!). As always, love your content and your candid delivery.

This was brilliant thanks for sharing. Didn't even know that kind of equipment existed

Such a great topic and post, thanks for creating and sharing.

GREAT video ... very educational for those of us aspiring cruisers! Looks like a great product and I will definitely buy one when I get my boat. Thank you and thanks to Marine-16.

I never thought I would be interested in diesel fuel, he has great knowledge and even more a knows how to put it over. A learning episode.

Fascinating stuff. And so simply and clearly explained.

not only did i get two episodes to watch today, i got an excellent discussion on cleaning a fuel tank. thanks.

Brilliant , really well received & informative...good stuff & yes a good product will always sell it self & will be a pleasure to give back up service to...cheers

Just a fascinating and very informative explanation of the dreaded diesel fuel we use today.Well done.

That was excellent. Very informative.

Very well explained product, Its worth saying that living aboard a boat in winter adds to considerable more condensation in stainless fuel tanks aswell

I have learned something this day; thank you.

Very enlightening.

a Must watch! and i will add go on to read the comments of all posted, many replies get into greater detail. definitely sharing this video.

Perfect presentation, i was just clicking around for fuel polishing, and then i found this. An Incredible system, that you cant really explain from pictures, and they way Peter detailed everything. You should let them put this video on the Diesel Dipper website. I'm shocked how bad modern Diesel has become, and what needs to be done to maintain a healthy fuel system, after all, in the offshore marine environment, your engine is a critical component. Well done folks, a big thumbs up.

Very interesting talk from the marine 16 director.....I didn't know about their complete fuel treatment product....I'll be buying some.

Very informative. Thanks

Aye m8’s, excellent way of telling the dirty diesel story! 👍

this was very worthwhile and thanks for publishing this video. Pleased to see the dipper flange being available since most tanks do not have direct bottom of tank access. However a $1000 price tag is pause for careful consideration...as is the space required to fit the device. I've asked them to publish all the dimensions on their website.

Very interesting video thank for sharing 👍

Another problem which was not mentioned is that water in the bottom of the tank particularly if it’s salt water, can actually corrode the tank! I had a situation just a few months ago which started out as a drip from underneath the boat. Upon investigation., it was actually fuel leaking through the fibreglass and gel coat! Looking into the problem further, and after removing the cockpit floor to get to the aluminium fuel tank and cutting out an inspection hole, we could see that the bottom of the tank was covered in small areas of corrosion and pin holes. What had obviously happened was that over a period of several years, water at the bottom of the tank had caused the problem which then went on to cause a further problem of fuel building up under the tank and eventually eating its way through the fibreglass to make its escape. This by the way, was a prestige boat and an aircraft standard of aluminium fuel tank!

Very well explained covering the key reasons why all diesel fuel presents problems to all users, the challenges for yachtsman with a fuel tank and system that have not been thought through ( or had the aim in mind to keep the tank clean) , together with the usual harsh marine environment and low stock turnover all ‘coalesce’ (see what I did there😉) to make it difficult if not nigh on impossible to recover from bad contamination. Any measure to reduce free water in the tanks has to be a good thing. It is common practice in larger vessels to have a service (or day tank) in addition to bulk storage ranks which helps, but not practical in a small yacht but probably doable 40 foot plus.

nice try on cadohas part- but i belive you can build a washer -water/ fuel separator/ add bug killer yes. wash fuel to spare container .and drain petcock to trash. open inspection plate clean/ suck /flush/ replace fuel with full tank as ur girl said .and remain full if as soon as possible make routine on any haul out.

very informative!

Really well discussed and presented. I enjoyed the technical perspective on what it did and why, I even went and looked at the shop to see if I should get one. For me, it’s too expensive. I know the cost versus benefit argument but I don’t mentally reserve that spend on an ‘engine attachment’. Shame as it looks like it’s a sensible very well made product..

Thanks for a brilliant presentation, the diesel dipper impresses me as an excellent invention and addition to a marine fuel system and I have now located the company on the web and saved the link to my address list under "yachts and sailing". It is nonetheless difficult to reconcile stringent environmental standards regarding sulfur levels in diesel with sulfur compounds which are added to petrol as a substitute for tetraethyl lead. With regard to the asphalting issue, marine diesel manufacturers could alleviate that wasteful and ultimately polluting problem by dispensing with common rail injection systems which recirculate fuel. Mechanical 'unit injector' technologies comparable to the system featured on old Detroit two stroke diesels would be a superior system for a number of reasons including simplicity. Simplicity imparts inherent durability and ease of maintenance, particularly in places where sophisticated technical services are often either not readily available or or not at available all, it also provides reliability and far greater tolerance for 'deposits'. Is there any reason the drain point on the Diesel Dipper unit could not be fitted with an automated, solenoid operated valve which automatically discharged a volume fuel equivalent to the capacity of the internal reservoir within the unit to an external receptacle at predetermined times? The reservoir could be fitted with an alarm to ensure it was emptied before overflow every week or so and constructed in such a way that it could be be easily removed and uncontaminated diesel returned to a tank. Speaking from experience as a bush pilot the volume of air within a fuel tank bears a directly proportional relationship to the quantity of water which can condense from it onto the exposed interior surface area of the tank for a given level of humidity. For this reason aircraft fuel tanks are kept as full as possible as consistently as possible and the system is checked daily for water at specific drain points carefully installed for the purpose. Many people might be surprised as to how much water sometimes accumulates in fuel tanks over just one night and all these practices are good preventive measures which are not difficult to incorporate to a daily routine and can provide additional benefits such as minimizing corrosion for some materials. If tanks began to incorporate bottoms faceted so they naturally incline towards a central location, any water in the 'unusable fuel' space would naturally gravitate to the outlet employed by the Diesel Dipper and that could significantly improve functionality for the device. Perhaps the company could offer a service for fabricating fuel tanks as an additional aspect of product diversity and in so doing optimize them to that end.

I don't about diesel bugs but Carly must have been getting worried about what bugs were hibernating in that beard. Wow! ...... doesn't he look so much younger! Keep up the great work guys and don't forget we need to see lil Hank too .........

Informative, interesting that the oil companies suggest you don’t store diesel for more than six months. Will check out the website as my diesel has been sitting in my tank for 19 months due to COVID………😒

Very informative. Unfortunately, unless I'm missing something, the products mentioned do not seem to be available in the US.

Wait! What! Where's Hank? Did you send him off to the pub to double-dip while you edified everyone about a new bug that's going around? Clever, as usual!

The beginning was castaway to a cast member of Star Trek!

I find this boat very pretty but I think the décor would be even more beautiful if the sofa covers were redone

I suppose if you have a stainless steel tank having water in the bottom will help corrosion, so in theory this dipper system will prevent a big complex job of replacing the tank.

I'd be interesting to understand how the Diesel Dipper works when a boat is yawing, pitching and rolling, and how it is different to a Racor or Separ type filter.

It seems like a great solution but at around £800 an expensive one. Andy UK

If you cannot get past the baffles , how does this get that fuel to remove it. I have lots of experience on sailing yachts with bug, the crap end having to sort out stopped engines , As in many cases it's the tube coming from the tank, that gets blocked , Evan the isolating valve . I understand it doesn't grow in water but in the layer between the water and the fuel. In 99% of cases you don't drain it out of a valve , If you have the bug this unit won't stop the fuel pick up picking up the fungus . With this very large filter system, great if you have a 1000 l8tr tank. But just as easy to put in a inline filter on the lift hose , 10 mins to change in an emergency. Bio chemicals are great if the tank is new to keep it under controle . But does not clean old tanks. And what you buy at a pump is probably the issue , in winter the tanks of a fuel dock sit and make the bug . It's not easy

An alternative to the Diesel Dipper should be to use GTL diesel or HVO100 diesel from Neste instead of normal diesel. Both claim that there are no such problems as with modern normal diesel.

I wonder if Diesel cars get the bug also??

John edmunds

Without trying to be presumptuous, have you had that lump on your neck checked out?