Diesel G25...when is it official?

[Wake.BC]

We have marine gas up which is basically the same thing as off road diesel, marked with a colour and no road tax. I ran it for years on our old boat and know many people who did. Now I run 91 but would totally get the marked with no hesitations.

Having a diesel boat would be actually easier for me. You can get a diesel tidy tank for pretty cheap and fill it up at the card lock. Or even at a normal gas station, I always forget in the cities diesel isn’t as popular, we’ve got it at every pump.


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[GMLIII]

Not really, Diesel is sold at nearly every gas station in the country. You can also unlike gas safely transport it in containers ect. It would be easy to have extra fuel stored on your trailer or in a pickup ect.. With the economy a diesel would get, you most likely would never need fuel at all on a day on the lake. People who live on a lake would need a fuel caddy, again not that big of a deal and many I know use them for fuel already anyway because of the buck a gallon surcharge for marina fuel.

I see your point but its all about convenience for me. At my age I have earn the right to purchase gas at marinas vs lugging gas containers down to my dock to fill up my boat. I realize I pay more not to lug the cans to my dock but the ease of filling up on the lake outweights the cost savings. Life is short

[Kenv]

I think some guys will get the Diesel just so they can put a big Cummins "C" on the back of the transom...and the Costa sticker.....LOL

[McCannLand]

My 2 biggest concerns would be;
1) Related to B20 Diesel (20% Bio-Diesel), many of the states in the US have B20 mandates. The higher percentage Bio Diesel allows moisture to stay suspended within it. Many marine diesel applications run fuel polishing systems to deal with the moisture in marine environments already, but i'm not aware of any of those systems dealing with the B20 that the everyday boat owner in the lower 48 would be dealing with. Depending on the Diesel engine design some don't handle the higher moisture, many have ultra high pressure fuel systems and as water don't compress ... well really bad things happen.
2) If regulators required Diesel Particulate Filters (DPF) then you would have to run Diesel Exhaust Fluid (DEF) to clean the DPF, that's done by burning the DEF (urea) within the exhaust at some pretty high temperature ... I'm not thinking that would be a good idea within the tight confines of these plastic boats. But yah, other then that I love Diesel.

[Wayward]

My 2 biggest concerns would be;
1) Related to B20 Diesel (20% Bio-Diesel), many of the states in the US have B20 mandates. The higher percentage Bio Diesel allows moisture to stay suspended within it. Many marine diesel applications run fuel polishing systems to deal with the moisture in marine environments already, but i'm not aware of any of those systems dealing with the B20 that the everyday boat owner in the lower 48 would be dealing with. Depending on the Diesel engine design some don't handle the higher moisture, many have ultra high pressure fuel systems and as water don't compress ... well really bad things happen.
2) If regulators required Diesel Particulate Filters (DPF) then you would have to run Diesel Exhaust Fluid (DEF) to clean the DPF, that's done by burning the DEF (urea) within the exhaust at some pretty high temperature ... I'm not thinking that would be a good idea within the tight confines of these plastic boats. But yah, other then that I love Diesel.

1- Pure diesel fuel doesn’t compress either.........

2- not all diesel engines with a DPF require DEF. There are tons of them out there now that aren’t running DEF on their new Diesel engines.

[McCannLand]

1- Pure diesel fuel doesn’t compress either.........

2- not all diesel engines with a DPF require DEF. There are tons of them out there now that aren’t running DEF on their new Diesel engines.

Not sure what you consider pure diesel. Nominally liquids in general are considered incompressible in reality they have low compressibility. Density is a good indicator of their variant, if it floats on water it's likely (i say likely as their may be an outlier i'm unfamiliar with) it's more compressible than water. The components are designed to compress diesel, not water and when they try to compress water they generally fail. I was pointing out that this is a bigger issue with Bio-Diesel as moisture tends to stay in suspension and that the diesel most owners of a trailerable boat have access to maybe B20. I'm not too familiar with diesel engines running DPF that don't also run DEF, the few I'm familiar with don't seem to be well suited for a water sports tow boat. General it seems that regulators haven't focused as hard on the consumer boat market for emissions, but this is a case where buyers may demand more as i can't see the riders wanting to go backwards on their air quality behind the boat.

[thedude]

My 2 biggest concerns would be;
1) Related to B20 Diesel (20% Bio-Diesel), many of the states in the US have B20 mandates. The higher percentage Bio Diesel allows moisture to stay suspended within it. Many marine diesel applications run fuel polishing systems to deal with the moisture in marine environments already, but i'm not aware of any of those systems dealing with the B20 that the everyday boat owner in the lower 48 would be dealing with. Depending on the Diesel engine design some don't handle the higher moisture, many have ultra high pressure fuel systems and as water don't compress ... well really bad things happen.
2) If regulators required Diesel Particulate Filters (DPF) then you would have to run Diesel Exhaust Fluid (DEF) to clean the DPF, that's done by burning the DEF (urea) within the exhaust at some pretty high temperature ... I'm not thinking that would be a good idea within the tight confines of these plastic boats. But yah, other then that I love Diesel.

Just an FYI - the DEF is injected in the exhaust stream to lower NOx emissions. The DPF is regenerated by burning diesel within the DPF. Think of it as 2 separate systems to control 2 separate pollutants. Not trying to be rude, just helpin ya out before your buddies call you out for spreading fake news.

[thedude]

Here in the states, every 2007.5-2010 Duramax ran a DPF and no DEF. Pretty sure Cummins 6.7 and 6.4 Powerstrokes in 08-10 were the same way. DEF came on the scene in 2011 to meet government NOx emissions standards. I'd take a marinized version of these engines in a towboat any day.

The biggest challenge would be the heat generated by a regenerating DPF, as I'd bet California and the EPA would require one. It would be water cooled, so hopefully they can figure out the material selection to avoid cracking and fatigue. I doubt you will see this option come to market in the USA. Kind of like the electric Ski Nautique they showed off a few years back.

[McCannLand]

Here in the states, every 2007.5-2010 Duramax ran a DPF and no DEF. Pretty sure Cummins 6.7 and 6.4 Powerstrokes in 08-10 were the same way. DEF came on the scene in 2011 to meet government NOx emissions standards. I'd take a marinized version of these engines in a towboat any day.

The biggest challenge would be the heat generated by a regenerating DPF, as I'd bet California and the EPA would require one. It would be water cooled, so hopefully they can figure out the material selection to avoid cracking and fatigue. I doubt you will see this option come to market in the USA. Kind of like the electric Ski Nautique they showed off a few years back.

Thanks, I clearly I misunderstood some of the details, but glad you caught the real point I was making with the heat required for cleaning the DPF. I agree this option will likely not come to market in the USA, but I love how concepts push the creativity of design.