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29-03-2016, 17:04
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#1
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Marine Service Provider
Join Date: Aug 2011
Location: St Augustine
Boat: '87 Irwin 43
Posts: 245
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Diesel fuel additive?
Diesel fuel additive...? Which one have you decided is the best? Why? How many others have you tried? I'd like to start a 'additive regimen" on our new to us 1987 Irwin 43 and prefer to learn from your experience...the manufacturers all think their product is the best...
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29-03-2016, 22:15
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#2
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cruiser
Join Date: Sep 2014
Boat: 1980 (Canning) Mariner36
Posts: 834
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Re: Diesel fuel additive?
I have used Seafoam in my car, truck and motorcycle for years with excellent results. Going to use it in my diesel for first time. Hoping it works as well. It can be used as a fuel stabilizer/cleaner although i mainly have used it every 500-1k miles as a cleaner. Its the one I settled on years ago after much research. It worked so well I never bothered to try any others.
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29-03-2016, 22:31
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#3
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Moderator
Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 18,458
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Re: Diesel fuel additive?
Marine 16 is popular this side of the pond after a good write up in a PBO some years ago. Interestingly our local marina supplies all diesel with Soltron already added.
The problem I have is that there is no real way for the average yachtie to prove or disprove it works or if one is the best.
What I would suggest if this boat is new to you, is open up the fuel tank and have a look inside. If its spotless great, just keep it that way with a good dose of something. If its a mess and probably is, clean it out first then treat the fuel going forwards.
We sailed for 6 years without any signs or problems before curiosity got the better of me and I looked inside the tank. No amount of additive or filtering would remove the mess from the previous 26 years of use. A leaky fuel filler cap o ring the primary suspect allowing small quantities of water inside. Time and bug did the rest.
Pete
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29-03-2016, 23:33
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#4
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Marine Service Provider
Join Date: Jan 2007
Location: home port Washington DC
Boat: SS Crocker design #131
Posts: 992
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Re: Diesel fuel additive?
We use whatever additive we can that specifically states it is for lubricity. Our Cummins was smoking a bit and had sticking valves (thus the smoking) from low sulfur diesel. An additive for lubricity ended the smoking and increased our fuel mileage. We just purchase whatever the NAPA store sells --sorry, no brand info but it works great for our purposes.
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"The only noble thing a man can do with money is to build a schooner." Robert Louis Stevenson
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30-03-2016, 00:23
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#5
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Registered User
Join Date: Jun 2011
Location: Tasmania, Australia
Boat: Bieroc 36 foot Ketch
Posts: 4,953
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Re: Diesel fuel additive?
Fuel Right
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30-03-2016, 03:28
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#6
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Registered User
Join Date: Aug 2012
Location: Maryland, USA
Boat: 58' Sedan Bridge
Posts: 5,430
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Re: Diesel fuel additive?
Google "Diesel Fuel Lubricity Additives Study Results" by Arlen Spicer, August 2007. Originally published on The Diesel Place, I think. It's dated a bit, now, of course; don't know if there's been an update anywhere..
One factoid I noticed is that ValvTect had a product named Diesel Guard that didn't fare particularly well in the tests, and sometime later they introduced a newer one called Diesel Guard Plus 6 (or some such). Don't know whether the new one speaks to better lubricity, whether cause-and-effect or not, though...
-Chris
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Chesapeake Bay, USA.
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30-03-2016, 04:53
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#7
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Registered User
Join Date: Apr 2008
Location: U.S., Northeast
Boat: Currently boatless
Posts: 1,643
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Re: Diesel fuel additive?
What is your objective? If it's to prevent the growth of micro-organisms causing sludge, I've had success with FPPF Killem. As far as I know, that's the only biocide approved by Yanmar.
__________________
... He knows the chart is not the sea.
-- Philip Booth, Chart 1203
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30-03-2016, 04:56
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#8
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Registered User
Join Date: Jun 2008
Location: Tampa, FL
Posts: 5,014
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Re: Diesel fuel additive?
Go here... Marine Systems Excellence Ezine | Steve D'Antonio Marine Consulting
Read his writeups on Diesel Fuel Additives, Part 1 and Part 2.
The main thing that you need to decide first is, what are you trying to achieve? Why do you think that you need any additives at all? Having people suggest random additives, without understanding the what and why of it, is kind of pointless.
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30-03-2016, 06:16
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#9
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Marine Service Provider
Join Date: Aug 2011
Location: St Augustine
Boat: '87 Irwin 43
Posts: 245
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Re: Diesel fuel additive?
Leaning heavily towards the FPPF product line for biocide, water dispersion, lubricity and stabilization. PO installed a new Yanmar 4JH4-TE and Mack Boring says FPPF is the product that won't void their warranty. Thanks Ziggy.
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30-03-2016, 06:16
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#10
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Senior Cruiser
Join Date: Sep 2014
Location: puget sound washington
Boat: 1968 Islander bahama 24 hull 182, 1963 columbia 29 defender. hull # 60
Posts: 12,159
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Re: Diesel fuel additive?
Many years ago when I was still trucking it was suggested by the owner of a diesel injector rebuild shop to use plain old outboard 2 cycle oil to increase lubricity and raise cetane levels . At a rate of about 500:1 well it worked wonders. Also he suggested md4 tranny fluid every few months to clean the injectors just add a pint or so per 50 gallons in the tank also worked wonders .
As an aside here is a link to the blind study mentioned earlier .
Lubricity Additive Study Results - Diesel Place : Chevrolet and GMC Diesel Truck Forums
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Non illigitamus carborundum
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30-03-2016, 09:31
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#11
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Marine Service Provider
Join Date: Jan 2007
Location: home port Washington DC
Boat: SS Crocker design #131
Posts: 992
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Re: Diesel fuel additive?
Quote:
Originally Posted by newhaul
Many years ago when I was still trucking it was suggested by the owner of a diesel injector rebuild shop to use plain old outboard 2 cycle oil to increase lubricity and raise cetane levels . At a rate of about 500:1 well it worked wonders. Also he suggested md4 tranny fluid every few months to clean the injectors just add a pint or so per 50 gallons in the tank also worked wonders .
As an aside here is a link to the blind study mentioned earlier .
Lubricity Additive Study Results - Diesel Place : Chevrolet and GMC Diesel Truck Forums
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Was the 'many years ago' before or after the low sulfur fuel requirements were implemented?
Sent from my iPhone using Cruisers Sailing Forum
__________________
"The only noble thing a man can do with money is to build a schooner." Robert Louis Stevenson
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30-03-2016, 09:42
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#12
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Senior Cruiser
Join Date: Sep 2014
Location: puget sound washington
Boat: 1968 Islander bahama 24 hull 182, 1963 columbia 29 defender. hull # 60
Posts: 12,159
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Re: Diesel fuel additive?
Quote:
Originally Posted by Schooner Chandlery
Was the 'many years ago' before or after the low sulfur fuel requirements were implemented?
Sent from my iPhone using Cruisers Sailing Forum
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After the ulsd screwup (broke back in 08 falling off trailer)
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Non illigitamus carborundum
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30-03-2016, 09:57
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#13
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Marine Service Provider
Join Date: Jan 2007
Location: home port Washington DC
Boat: SS Crocker design #131
Posts: 992
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Re: Diesel fuel additive?
Quote:
Originally Posted by newhaul
After the ulsd screwup (broke back in 08 falling off trailer)
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Lol. We have different ideas of 'many'. 08 is 'a few' years ago in my timeline, 1998 would be 'several' years ago...whereas 1988 would be 'many' years ago. 😚
Sent from my iPhone using Cruisers Sailing Forum
__________________
"The only noble thing a man can do with money is to build a schooner." Robert Louis Stevenson
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30-03-2016, 10:19
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#14
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Registered User
Join Date: Jun 2008
Location: Tampa, FL
Posts: 5,014
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Re: Diesel fuel additive?
Ha! 1988 was when my daughter was born. I don't consider that very many years ago!
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30-03-2016, 18:11
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#15
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Registered User
Join Date: Apr 2008
Location: U.S., Northeast
Boat: Currently boatless
Posts: 1,643
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Re: Diesel fuel additive?
Quote:
Originally Posted by malyea
Leaning heavily towards the FPPF product line for biocide, water dispersion, lubricity and stabilization. PO installed a new Yanmar 4JH4-TE and Mack Boring says FPPF is the product that won't void their warranty. Thanks Ziggy.
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I think there's a good case to be made for biocide, but I'm not convinced there is a need for fuel conditioning additives in an engine that's in reasonably good condition in the U.S. In particular, rather than rely on additives that purport to disperse water, I'd make sure to have a good water separating primary filter and check it regularly.
__________________
... He knows the chart is not the sea.
-- Philip Booth, Chart 1203
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