Fuel additives
Professional
Joined: Nov 2007
Posts: 111
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RE: Fuel additives
Well, I am a newly registered member but have been gathering info from this forum for a while. I have to say that this is truly a great site for cummins owners.
I have been using the so called "Drew's Brew" for over a year now. I aint no "math-majician" but I can honestly say it works for me. It cost me $6 dollars at Wal-Mart to buy the 32oz PS in the gray bottle and the 16oz MMO. I get atleast 2 more miles per gallon when using this (sometimes really close to 3.) So, for the a cost of $3 dollars a tank (16oz PS + 8oz MMO per tank) I get an "extra" 60+ miles.
Without the "brew," I only get 16 mpg. Diesel here in NE Texas is costing me $3.35 a gallon. To go 60 more miles on diesel alone (no "brew") I would have to buy 3.75 more gallons and that would cost me $12.56.
Would you rather spend $3 for 60 miles, or $12.56 for 60 miles?
So, you ask why people use it? Simple math. Works for me!
I have been using the so called "Drew's Brew" for over a year now. I aint no "math-majician" but I can honestly say it works for me. It cost me $6 dollars at Wal-Mart to buy the 32oz PS in the gray bottle and the 16oz MMO. I get atleast 2 more miles per gallon when using this (sometimes really close to 3.) So, for the a cost of $3 dollars a tank (16oz PS + 8oz MMO per tank) I get an "extra" 60+ miles.
Without the "brew," I only get 16 mpg. Diesel here in NE Texas is costing me $3.35 a gallon. To go 60 more miles on diesel alone (no "brew") I would have to buy 3.75 more gallons and that would cost me $12.56.
Would you rather spend $3 for 60 miles, or $12.56 for 60 miles?
So, you ask why people use it? Simple math. Works for me!
Professional
Joined: Aug 2004
Posts: 117
Likes: 1
From: 33.43.342, 84.21.602
RE: Fuel additives
ORIGINAL: QUACKSTACKER
Well, I am a newly registered member but have been gathering info from this forum for a while. I have to say that this is truly a great site for cummins owners.
I have been using the so called "Drew's Brew" for over a year now. I aint no "math-majician" but I can honestly say it works for me. It cost me $6 dollars at Wal-Mart to buy the 32oz PS in the gray bottle and the 16oz MMO. I get atleast 2 more miles per gallon when using this (sometimes really close to 3.) So, for the a cost of $3 dollars a tank (16oz PS + 8oz MMO per tank) I get an "extra" 60+ miles.
Without the "brew," I only get 16 mpg. Diesel here in NE Texas is costing me $3.35 a gallon. To go 60 more miles on diesel alone (no "brew") I would have to buy 3.75 more gallons and that would cost me $12.56.
Would you rather spend $3 for 60 miles, or $12.56 for 60 miles?
So, you ask why people use it? Simple math. Works for me!
Well, I am a newly registered member but have been gathering info from this forum for a while. I have to say that this is truly a great site for cummins owners.
I have been using the so called "Drew's Brew" for over a year now. I aint no "math-majician" but I can honestly say it works for me. It cost me $6 dollars at Wal-Mart to buy the 32oz PS in the gray bottle and the 16oz MMO. I get atleast 2 more miles per gallon when using this (sometimes really close to 3.) So, for the a cost of $3 dollars a tank (16oz PS + 8oz MMO per tank) I get an "extra" 60+ miles.
Without the "brew," I only get 16 mpg. Diesel here in NE Texas is costing me $3.35 a gallon. To go 60 more miles on diesel alone (no "brew") I would have to buy 3.75 more gallons and that would cost me $12.56.
Would you rather spend $3 for 60 miles, or $12.56 for 60 miles?
So, you ask why people use it? Simple math. Works for me!
good to hear. . .
Professional
Joined: Nov 2007
Posts: 111
Likes: 0
From:
RE: Fuel additives
Yes. I tried the Lucas stuff and saw no improvement in fuel mileage. Also, a buddy of mine that runs a hot-shot service tried it and didnt find any improvement either. Both of us did ahve increases using the PS and MMO.
Rookie
Joined: Feb 2006
Posts: 85
Likes: 0
From:
RE: Fuel additives
I use the Howes additive. It is $13 for a 32 oz and you use 4 oz per fill up. $1.63 per tank and I am getting 24 MPG without the trailer hooked up. Howes is the only one approved by Cummins and I found out about it from some truckers that use it in the big rigs. my friend is getting 8mpg with a full load when he used to be getting 5mpg without the additive.
Joined: Oct 2007
Posts: 801
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From:
RE: Fuel additives
ORIGINAL: MAB_CTD_4X4
Anyone ever try Lucas Oil Fuel Treatment?
Anyone ever try Lucas Oil Fuel Treatment?
Sorry.... I feel better now.
Joined: Oct 2007
Posts: 801
Likes: 0
From:
RE: Fuel additives
ORIGINAL: carter
Guess no one knows or wants to share knowledge on cetane effects!
Guess no one knows or wants to share knowledge on cetane effects!
[align=center]
The Importance of Cetane Number in Diesel Fuel[/align]
[align=center]
What is Cetane Number?[/align][ul][*]Cetane Number is a measure of the ignition quality of a diesel fuel. It is often mistaken as a measure of fuel quality. Cetane number is actually a measure of a fuel's ignition delay. This is the time period between the start of injection and start of combustion (ignition) of the fuel. In a particular diesel engine, higher cetane fuels will have shorter ignition delay periods than lower cetane fuels.[*]Cetane number should not be considered alone when evaluating diesel fuel quality. API gravity, BTU content, distillation range, sulfur content, stability and flash point are also very important. In colder weather, cloud point and low temperature filter plugging point may be critical factors. [/ul][align=center]
Determining Cetane Number[/align][ul][*]The optical method for determining cetane number is ASTM test D-613.This method requires the use of an industry standard test engine equipped with accepted instrumentation and operated under specific conditions. In this test, the engine compression ratio is varied for the test sample and reference fuels of known cetane number to obtain a fixed ignition delay. The compression ratio of the sample is bracketed by those of two reference fuels. The cetane number of the sample fuel is determined by estimating between the two reference fuel points.[*]Because the ASTM D-613 test is time consuming and expensive, calculated cetane index (ASTM D-976 or D-4737 is often substituted for cetane number. The calculated cetane index is derived from the fuel's density and boiling range. While useful for estimating the cetane number of distillate fuels, this technique can not be applied to fuels containing additives that raise cetane number. These additives do not change the fuel density or distillation profile, so they do not alter the calculated cetane index. [/ul][align=center]
How Does Cetane Number Affect Engine Operation?[/align][ul][*]There is no benefit to using a higher cetane number fuel than is specified by the engine's manufacturer. The ASTM Standard Specification for Diesel Fuel Oils (D-975) states, "The cetane number requirements depend on engine design, size, nature of speed and load variations, and on starting and atmospheric conditions. Increase in cetane number over values actually required does not materially improve engine performance. Accordingly, the cetane number specified should be as low as possible to insure maximum fuel availability." This quote underscores the importance of matching engine cetane requirements with fuel cetane number.[*]Diesel fuels with cetane number lower than minimum engine requirements can cause rough engine operation.They are more difficult to start, especially in cold weather or at high altitudes. They accelerate lube oil sludge formation. Many low cetane fuels increase engine deposits resulting in more smoke, increased exhaust emissions and greater engine wear.[*]Using fuels which meet engine operating requirements will improve cold starting, reduce smoke during start-up, improve fuel economy, reduce exhaust emissions, improve engine durability and reduce noise and vibration. These engine fuel requirements are published in the operating manual for each specific engine or vehicle.[*]Overall fuel quality and performance depend on the ratio of parafinic and aromatic hydrocarbons, the presence of sulfur, water, bacteria, and other contaminants, and the fuel's resistance to oxidation. The most important measures of fuel quality include API gravity, heat value (BTU content), distillation range and viscosity. Cleanliness and corrosion resistance are also important. For use in cold weather, cloud point and low temperature filter plugging point must receive serious consideration. Cetane number does not measure any of these characteristics. [/ul][align=center]
Cetane Improvers / Ignition Accelerators[/align][ul][*]U S diesel fuels are blends of distillate fuels and cracked petroleum hydrocarbons. The cracked hydrocarbons are low cetane compounds, largely due to their aromatic content. To meet the cetane number demands of most diesel engines, cetane improvers must be added to these blends. The lower cetane cracked compounds are less responsive to these cetane improvers than the higher cetane paraffinic fuels.[*]Cetane improvers modify combustion in the engine. They encourage early and uniform ignition of the fuel. They discourage premature combustion and excessive rate of pressure increase in the combustion cycle. Depending on the amount of high versus low cetane components in the base fuel, typical alkyl nitrate additive treatments can increase cetane by about 3 to 5 numbers (1:1000 ratio). With high natural cetane premium base fuels (containing a high percentage of parafins) and a 1:500 treatment ratio, cetane may increase up to a maximum of about 7 numbers.[*]Most cetane improvers contain alkyl nitrates which break down readily to provide additional oxygen for better combustion. They also break down and oxidize fuel in storage. This generates organic particulates, water, and sludge - all of which degrade fuel quality. The result is often a fuel which no longer meets even minimum requirements. [/ul][align=center]
Do Cetane Improving Additives Really Improve Fuel Quality?[/align][ul][*]Fuel quality is defined by the physical property specifications given in the ASTM Standard Specification for Diesel Fuel Oils, ASTM D-975. Carbon residue, ash and sulfur increase engine wear and deposit formation. Premium diesel fuels should have lower specifications for these properties. Additionally, premium diesel fuels should be more stable in storage than standard fuels, so the premium fuel quality you purchase won't degrade over time. This is the area where nitrate-containing cetane improvers cause problems. [/ul][align=center]
Specifying Diesel Fuel[/align][ul][*]Cetane number is an important measure of ignition quality, or cold-starting ability. API gravity is an excellent indicator of heat value, which translates into fuel economy and power. The distillation curve reflects the molecular weight distribution, with higher boiling fractions providing better lubrication, higher cetane - and more deposits. Sulfur content is directly related to corrosion; this needs to be as low as possible. Oxidation stability, water, and sediment content affect the storage life of the oil. For winter use, low cloud point and low temperature filter plugging point are critical to uninterrupted operation. To insure the best quality fuel for your diesel engines, follow the engine manufacturer's specifications for all these characteristics. [/ul]
Veteran
Joined: Jan 2007
Posts: 261
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From:
RE: Fuel additives
After reading how bad mmo faired in the lubrication study I wont run it again.
I was not familiar with Howes, but will find a place to pick some up and run a few tanks soon. Looks to serve the same purpose as MMO and PSD (white), all in one?