Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 19-09-2007, 11:48   #16
Registered User

Join Date: Sep 2007
Posts: 125
No one has mentioned Cetane Value yet.

Just like gasoline has a octane diesel has a cetane value, the higher the cetane value the lower the temp an engine can start, less diesel combustion knock occurs, less engine deposits occur less smoke fumes and odor.

The cetane number an indication of the types of hydrocarbon in the fuel more parafinnic, less napthalenes, and aromatics.

Depending on the crude blend and the refinery, virgin stocks (ie not catalytically cracked to smaller molecules) will produce the highest cetane number, but will also have the highest pour point (temperature at which the diesel gels).

All diesel at the pump will meet the high speed diesel engine specifications, there are many other grades of diesels (not at pumps) sold for large engines.

So for marine use don't buy winter diesel (if possible), if you purchase some poor quality diesel in the third world, do not operate your engine at full power, warm it up well, install new filters, cool it down well, consider adding a cetane improver.

jscott is offline   Reply With Quote
Old 05-10-2007, 04:23   #17
Moderator Emeritus
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 32,226
Images: 240
The Chevron (Texaco) Diesel Fuels Technical Review offers a lot of good information about diesel fuels:

Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"

GordMay is online now   Reply With Quote
Old 05-10-2007, 04:39   #18
Senior Cruiser
Lancerbye's Avatar

Cruisers Forum Supporter

Join Date: Mar 2007
Location: Ladysmith,BC, Vancouver Island , Canada
Boat: Lancer 44 Motorsailer
Posts: 1,760
Images: 32
Back when I lived on a large acreage on Vancouver Island I had some off road equipment which allowed me to purchase and burn dyed diesel (no road tax). The delivery truck came to my place, filled up my 500 Gal tank with standard greenish yellow diesel (taxed type) and gave me a package of dye to put into the tank. Did I mention I also had a couple of diesel trucks. I told I would do that right away. Yep. Sure.

The basis of accomplishment is in never quitting
Mengzi Meng-tse
Lancerbye is offline   Reply With Quote

diesel, fuel

Thread Tools
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
diesel Fuel Filter Charlie Engines and Propulsion Systems 7 29-10-2006 19:19
Diesel Fuel system-long Boomer Engines and Propulsion Systems 2 08-06-2006 14:55
Some free diesel fuel? will n Engines and Propulsion Systems 3 30-05-2006 21:13
Diesel Fuel Tanks Tankage SkiprJohn Construction, Maintenance & Refit 12 25-05-2006 21:53
diesel fuel storage?? cadye Engines and Propulsion Systems 21 21-09-2005 12:38

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 03:36.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.