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Diesel Winterization

DIESEL engine, transmission and generator repair and maintenance discussion forum.
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Midnightsun
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Diesel Winterization

Postby Midnightsun » September 13th, 2018, 7:02 am

Sorry for the ugly word winterization but it is on the doorstep whether we like it or not. Diesel is relatively new to me since all my previous boats were gas. Question is, should one add some type of treatment for the layup period such as stabilizer for gas? I do make sure I have run through both main and aux tanks during the summer so I know the diesel is relatively fresh for the layup period. I do tend to fill up rather full to eliminate as much condensation as possible.

Found this which kinda says additives sometimes work depending on the diesel fuel manufacturer (like we know where it comes from or the formulation :banghead: ) which tells me either it is doing a good thing or pouring money into the tank when choosing to add something.

https://www.fueltechnologiesinternation ... -fuel.html

Also I do see "Stabil" does sell a diesel version.https://www.amazon.com/gp/product/B0036CJ15O/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1
Cheers, Hans
2007 Carver 41 CMY
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Montreal, Canada
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AaHubb
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Re: Diesel Winterization

Postby AaHubb » September 13th, 2018, 10:45 am

I believe the biggest concern with diesel is algae growth in the tanks. The local marine diesel supplier puts an algicide in the mix for fall/winter.
..Aaron
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Re: Diesel Winterization

Postby Viper » September 13th, 2018, 12:33 pm

Was wondering who was going to say that word first ;-)
I get a different answer too depending on who I talk to. There are some pretty amazing claims out there that one should take with a grain of salt though. Considering the cost versus piece of mind, and I'm just talking only about stabilizing the fuel for 6 months, I err on the side of caution and add a stabilizer at winterizing time and nothing else. If there is a fuel condition issue during the season, that gets dealt with separately at that time as there are many variables involved. There are stabilizers with biocides but you really don't have to worry about that in our climate over the winter layup. Get a good brand of stabilizer without a bunch of bells and whistles and put the concern to bed IMO.

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Re: Diesel Winterization

Postby Makin Waves » September 13th, 2018, 2:48 pm

I put 1 gallon of Stanadyne Fuel conditioner in each tank, use it for all my diesel equipment as well, great product
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Re: Diesel Winterization

Postby rcoff512 » September 14th, 2018, 8:45 am

Midnightsun,

I was Chief of NYC Department of Sanitation facilities and equipment until 2006. We used a stabilizer called Pri-D in our standby generators and fleet servicing fuel tanks with success. I use it now in my 1999 450 Voyager for my 6 month winter layup in water on Long Island and each time I fuel up in summer. It stabilizes the asphaltenes in the fuel which become the sludge in the tanks and filters. Knock on wood, no fuel issues.

link attached.

http://priproducts.com/wp-content/uploa ... /PRI-D.pdf

https://www.go2marine.com/product/95605 ... lizer.html

I don't buy it from go2 but they have a pretty good product description with list of small quantity bottles.

Rich

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