cectane level: diesel v.s. oil - Ford Truck Enthusiasts Forums

Notices

cectane level: diesel v.s. oil

Reply

 
 
 
  #1  
Old 11-08-2012, 08:33 PM
1989f250IDI's Avatar
1989f250IDI
1989f250IDI is offline
Elder User
Thread Starter
Join Date: Jul 2012
Location: Adair, ok
Posts: 501
1989f250IDI is starting off with a positive reputation.
cectane level: diesel v.s. oil

if i run straight diesel v.s. Diesel with a gallon of oil in it which has a higher cectane level
 
Reply With Quote
  #2  
Old 11-12-2012, 08:29 PM
joshofalltrades
joshofalltrades is offline
Postmaster
Join Date: Feb 2011
Posts: 3,556
joshofalltrades has a good reputation on FTE.joshofalltrades has a good reputation on FTE.
since cetane rating is how readily the fuel ignites, i suspect the straight diesel would be better in that regard. but i'm no scientist when it comes to this.
i've run as much as 20% oil in my diesel with good results, i would say you're totally fine running even a few gallons oil per tank of fuel, though i can't say what it does to the cetane rating. but if it runs well on it, what does it matter
 
Reply With Quote
  #3  
Old 01-01-2013, 12:30 PM
The Eddie's Avatar
The Eddie
The Eddie is offline
Freshman User
Join Date: Sep 2005
Location: Houston, Texas
Posts: 38
The Eddie is starting off with a positive reputation.
65-Cetane?

I try to burn B100, from Houston BioDiesel whenever I can, and have since Y2K or thereabouts; I'll never forget just how much the 12V BTA 5.9 smoothed out when the petrodiesel segued to the Bdiesel at the combustion chambers; night and day difference!

I asked HBD's owner (and pump jockey/cashier/warehouseman/buyer/salesman/class instructor/etc., you get the picture) about this phenomenon, and FWIW, he told me Bdiesel has not only higher lubricity values, but B100 has a cetane rating around 65+-, whereas USA-spec petroleum diesel runs 54 (the lowest in the world, BTW). Perhaps exaggerated slightly (c'mon--11 points?), but considering the improvement in engine performance I saw, I have no real reason to doubt him.

Eddie, The
 

Last edited by The Eddie; 01-01-2013 at 12:39 PM. Reason: Used "'s" when I should'ha used "s'"
Reply With Quote
  #4  
Old 01-02-2013, 08:06 AM
MNBen's Avatar
MNBen
MNBen is offline
Freshman User
Join Date: Dec 2012
Location: West Central Minnesota
Posts: 43
MNBen is starting off with a positive reputation.
Diesel is a distillate and is measured in cetane. WMO is a residual and cannot be measured in cetane levels, but should be measured CCAI or CII, in IMO. In reading, the calculation will normally give a value somewhere between 800 and 880. The lower the value is the better the ignition quality. Fuels with a CCAI higher than 880 are often problematic or even unusable in a diesel engine. CCAI are often calculated under testing of marine fuel.

So I think the question people should be asking is what is the CCAI of WMO?
So, does anyone have a number?

Note, all info above was from Wiki searching cetane.

Ben
 
Reply With Quote
  #5  
Old 02-12-2013, 04:57 AM
46/71 Hybrid
46/71 Hybrid is offline
Junior User
Join Date: Apr 2012
Posts: 77
46/71 Hybrid is starting off with a positive reputation.
Originally Posted by The Eddie View Post
I try to burn B100, from Houston BioDiesel whenever I can, and have since Y2K or thereabouts; I'll never forget just how much the 12V BTA 5.9 smoothed out when the petrodiesel segued to the Bdiesel at the combustion chambers; night and day difference!

I asked HBD's owner (and pump jockey/cashier/warehouseman/buyer/salesman/class instructor/etc., you get the picture) about this phenomenon, and FWIW, he told me Bdiesel has not only higher lubricity values, but B100 has a cetane rating around 65+-, whereas USA-spec petroleum diesel runs 54 (the lowest in the world, BTW). Perhaps exaggerated slightly (c'mon--11 points?), but considering the improvement in engine performance I saw, I have no real reason to doubt him.

Eddie, The
On my usually traveled route which includes NY, PA, OH, NC, WV, and VA, I have seen several diesel pumps with stickers indicating their diesel cetane rating is 40-45. I think the minimum must be 40 since I've never seen it lower than that. I would love it if the min spec was 54, the highest I've seen is 50 on a few premium diesel pumps.

As far as us being the lowest in the world, I lived in eastern Africa for 2 years and can undoubtedly tell you that their diesel isn't nearly as good as ours. I don't have any hard numbers but I know of several fuel stations that in no way, shape, or form, had a higher cetane rating than what we have in the US.
 
Reply With Quote
  #6  
Old 02-26-2013, 09:09 PM
444dieselrod's Avatar
444dieselrod
444dieselrod is offline
Posting Guru
Join Date: Aug 2004
Location: Barnesville MN
Posts: 2,415
444dieselrod is gaining momentum as a positive member of FTE.444dieselrod is gaining momentum as a positive member of FTE.
One thing to remember about cetane is every engine requires a different amount, and every engine has a sweet spot. It is possible to put in to much cetane and get a net loss of power. The cetane flashes off to soon in the injection cycle resulting in less power due to the advanced timing.

Diesel Rod
 
Reply With Quote
  #7  
Old 03-31-2013, 11:09 PM
speedwrench72's Avatar
speedwrench72
speedwrench72 is offline
Posting Guru
Join Date: Dec 2012
Location: western washington
Posts: 1,064
speedwrench72 is starting off with a positive reputation.
5 gallon's 0-20 moter oil, and 5 gallons diesel, 1/2 gallon rug, no differance in how she runs or starts, my oil is virgin,,I get it from work, some atf in the mix as well,, i try to get the light 0-20 oils...
 
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
pops_91710
General Automotive Discussion
1
02-23-2015 05:00 AM
MBernat
1999 - 2003 7.3L Power Stroke Diesel
27
10-08-2010 08:02 AM
Diesel_Brad
Ranger & B-Series
5
12-15-2009 11:38 AM
Ford15926
1999 to 2016 Super Duty
23
05-10-2009 09:34 AM
Y2K350
Modular V10 (6.8l)
7
09-11-2002 03:42 PM


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description: