Cruisers Forum
 


Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 01-12-2019, 23:37   #16
Registered User

Join Date: Mar 2006
Location: Nevada City. CA
Boat: Sceptre 41
Posts: 3,850
Images: 9
Re: 4 year old diesel

So does anyone know whether cetane boost will help old diesel burn better
__________________
Fair Winds,

Charlie

Between us there was, as I have already said somewhere, the bond of the sea. Besides holding our hearts together through long periods of separation, it had the effect of making us tolerant of each other's yarns -- and even convictions. Heart of Darkness
Joseph Conrad
Charlie is offline   Reply With Quote
Old 02-12-2019, 00:03   #17
Senior Cruiser

Cruisers Forum Supporter

Join Date: May 2013
Location: Oregon to Alaska
Boat: Wheeler Shipyard 83' ex USCG
Posts: 3,098
Re: 4 year old diesel

Quote:
Originally Posted by Charlie View Post
So does anyone know whether cetane boost will help old diesel burn better
I use Archoil AR6200 that improves the burn, biocide, stabilizer, etc., and gives me about 6-8% better mileage.
Attached Files
File Type: pdf AR6200-compressed.pdf (1.61 MB, 8 views)
Lepke is offline   Reply With Quote
Old 02-12-2019, 05:38   #18
Registered User

Join Date: Jun 2019
Location: Ensenada
Boat: 1970 Willard 36 Trawler
Posts: 1,530
Re: 4 year old diesel

I had a similar issue. Unfortunately, I do not have a good suggestion, just a story about how it worked out for me.

My trawler carries 400 gallons and the Perkins 4.236 85hp burns under 1-1/2 gph. I've had her for almost 25-years and last time I filled up was about 20-years ago - she's been sitting for years as a pied a Terre in SF. We aew getting ready to retire and cruise her, so it's time for a sorely needed refit. Last year, I decided to bring her from SF to Ensenda for a total refit which is underway.

I had about 150-200 gallons of roughly 20-year old fuel aboard. I can tell you diesel definitely has a shelf life - one side smelled more like linseed oil than diesel. I've used the same mechanic for well over 20-years and trust him. He strongly advised disposing of the fuel....... until he found out the price, which would have been at least $4000. I needed about 120 gallons to make the 500 nms run to Ensenada and part of the refit was planned to repair or replace the fuel tanks, so didn't want excess fuel aboard.

We decided to triple dose with Stanadyne (find it at Diamond Diesel in Oakland) which was also recommended by a friend who works for Deere Marine Propulsion. My understanding is its a fuel conditioner that helps keep asphaltines from precipitating out. I also added 80-gallons of fresh diesel.

I did about 20-hours of local sea trials and the engine ran fine so made the decision to just go for it. Ran about 75 engine hours straight through to Ensenada. The pressure on racors came up a bit and the clear bowls were dark as night from old tarnished fuel. I ran mostly on the tank that didn't smell as bad though.

I ended up replacing both fuel tanks so tried to unload the old fuel - 250 gallons, or over $1000 worth of fuel. Tried giving it away to the local fishing fleet. When they saw the fuel in a Mason jar, even they wouldn't take it. But my old Perkins ran fine with it. Doubt a newer Tier 3 (common rail) engine would.
mvweebles is online now   Reply With Quote
Old 02-12-2019, 06:38   #19
Registered User

Join Date: Nov 2019
Posts: 1,698
Re: 4 year old diesel

Quote:
Originally Posted by Charlie View Post
I just looked at my records and the last time I filled my diesel tanks was approaching 4 years ago. Two 35 gal tanks and down to 7 gallons. At the same time I put 10 gallons of diesel in 2 jeri cans which have lived in a cool lazaret in SF Bay. I am tempted to mix five gallons in each tank with 30 gallons of new diesel. But since it took 4 years to use up a full load of fuel I am hesitant to fill both tanks.

Any thoughts?

Also how do you dispose of diesel in the Grating State of Kalifornia?


Common practice..... no more than one year storage of diesel fuel

https://www.bp.com/content/dam/bp-co...age-diesel.pdf
Attached Thumbnails
Click image for larger version

Name:	IMG_0591.jpg
Views:	32
Size:	389.2 KB
ID:	204217  
slug is offline   Reply With Quote
Old 02-12-2019, 08:01   #20
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Jacksonville/ out cruising
Boat: Island Packet 38
Posts: 31,473
Re: 4 year old diesel

Quote:
Originally Posted by Charlie View Post
So does anyone know whether cetane boost will help old diesel burn better


If its good stuff then yes, but there is a lot of snake oil out there.
In fact good defame booster has pretty much solved my smoky Yanmar.
a64pilot is offline   Reply With Quote
Old 02-12-2019, 09:20   #21
Registered User

Join Date: Mar 2006
Location: Nevada City. CA
Boat: Sceptre 41
Posts: 3,850
Images: 9
Re: 4 year old diesel

Quote:
Originally Posted by mvweebles View Post
I had a similar issue. Unfortunately, I do not have a good suggestion, just a story about how it worked out for me.

My trawler carries 400 gallons and the Perkins 4.236 85hp burns under 1-1/2 gph. I've had her for almost 25-years and last time I filled up was about 20-years ago - she's been sitting for years as a pied a Terre in SF. We aew getting ready to retire and cruise her, so it's time for a sorely needed refit. Last year, I decided to bring her from SF to Ensenda for a total refit which is underway.

I had about 150-200 gallons of roughly 20-year old fuel aboard. I can tell you diesel definitely has a shelf life - one side smelled more like linseed oil than diesel. I've used the same mechanic for well over 20-years and trust him. He strongly advised disposing of the fuel....... until he found out the price, which would have been at least $4000. I needed about 120 gallons to make the 500 nms run to Ensenada and part of the refit was planned to repair or replace the fuel tanks, so didn't want excess fuel aboard.

We decided to triple dose with Stanadyne (find it at Diamond Diesel in Oakland) which was also recommended by a friend who works for Deere Marine Propulsion. My understanding is its a fuel conditioner that helps keep asphaltines from precipitating out. I also added 80-gallons of fresh diesel.

I did about 20-hours of local sea trials and the engine ran fine so made the decision to just go for it. Ran about 75 engine hours straight through to Ensenada. The pressure on racors came up a bit and the clear bowls were dark as night from old tarnished fuel. I ran mostly on the tank that didn't smell as bad though.

I ended up replacing both fuel tanks so tried to unload the old fuel - 250 gallons, or over $1000 worth of fuel. Tried giving it away to the local fishing fleet. When they saw the fuel in a Mason jar, even they wouldn't take it. But my old Perkins ran fine with it. Doubt a newer Tier 3 (common rail) engine would.
Thanks for the anecdote. My fuel is clean. I plan on running it through a West Marine water separating fuel filter twice prior to putting it in my tanks. I will mix it with fresh diesel and add cetane boost.

I don't know if this is possible but the Red Oak Victory ship in Richmond has a boiler which they fire up. They can burn lesser quality fuel. You may be able to donate to them.
__________________
Fair Winds,

Charlie

Between us there was, as I have already said somewhere, the bond of the sea. Besides holding our hearts together through long periods of separation, it had the effect of making us tolerant of each other's yarns -- and even convictions. Heart of Darkness
Joseph Conrad
Charlie is offline   Reply With Quote
Old 03-01-2020, 09:47   #22
Registered User

Join Date: Jul 2017
Posts: 382
Re: 4 year old diesel

I went through this last year (I even had a post here on CF asking for information) and eventually I was shown the difference: "old" diesel looks very different from good diesel, you just can't miss! If in doubt, just pour it in a clear container before filling the tank, if it is pink, it is good for sure. Old diesel (which btw would still work, but probably leave residue) changes color quite a bit. Also, if it has sediments, they are clearly visible.
FabioC is offline   Reply With Quote
Reply

Tags
diesel, grass

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
20 year old boat or 30 year old boat?? jimp1234 Monohull Sailboats 34 25-02-2018 23:40
2 Year Old Diesel Fuel in Tanks endoftheroad Engines and Propulsion Systems 15 18-02-2012 17:43
New to Cruising - With 8 Year-Old and 7 Month-Old NeverforGranted Meets & Greets 2 25-04-2010 13:33
30 Year-Old Diesel ksmith Engines and Propulsion Systems 3 07-06-2009 12:30
3 year old diesel fuel ? ribbony Engines and Propulsion Systems 24 04-03-2008 17:32

Advertise Here


All times are GMT -7. The time now is 12:41.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.