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Archoil

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“The only reservation I had with Archoil was their mileage claims. As with any additive, mileage is so subjective and depends on so many conditions, I don't think you can measure any effect using an additive”.

Sure you can.

1). Same route, same speed (60-MPH to end wind resistance problems), same load with same driver on 100% cruise control. Start/Stop from same fuel pump having run farther than what’s necessary to pump at least ten (10) gallons to avoid filling error. (200-mile loop).

Consecutive days with same weather. First day without, and second day “with”.


2). One also tracks all gallons consumed against the year previous. For the same gallons (against engine hours), what difference if any in the Average Annual MPG year-to-year.

90% of Americans travel to 90% of the same places 90% of the time.

Getting the driver out of the picture was Test One.
And getting placebo effect out is Test Two.

Fuel Additives are more easily seen as better combustion efficiency. The engine that hangs on longer before a downshift sort of thing.

Tell someone he’ll get better fuel mileage and he’ll drive worse than before.

Everyone wants something which automagically renders his poor habits moot.

For those who’ve gone to the trouble of getting out of the way of the truck (highest amount of constant-rpm “steady state” Town or Country), one can find better MPG with more energy put to good use (clean burn) via additives.

Are they good? Depends on if YOU are good.

Fuel burn is about degree & duration of input. Shorten BOTH of those to achieve the same end and savings appear. Fuel additives “work” when fuel burn is known. (Exactly).

Class 8 15L — or one of these diesel sports cars — it ain’t hard to tell once the baseline is known. In a late big truck one needs some “help” every 3-5,000/miles to clean it up again (very low idle time; higher means more often).

I run one of something fairly well constantly in the CTD. Doesn’t add much per gallon when no need for major clean-up involved (double dose).

Track percent idle time (or maintain above 27-MPH Average) and it’s not really an extra expense.

Power Service is fine. I prefer HOWES Diesel Defender as to availability and performance. Anything by SCHAEFFERs is gold, just harder to find without ordering


Diesel from high-volume truckstops (freshest) is always best action before anything else.

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I have a 2020 3500 HD . I noticed the DPF gauge starting to rise much sooner when just driving empty . I decided to give Archoil a try . I put the black bottle in and started using the additive when fueling . I haven't seen it move since . Made me a believer !
 
I know people who swear by various Mechanic in a Can additives
and people who never use fuel additives
and I've come to the conclusion that both types have a similar end result
so I have learned to hedge my bets and use fuel additives on a occasional basis.

Worth pointing out I never noticed anything different one way or the other.

Fuel economy measurement outside of a lab environment is subjective,
so any claims otherwise should be taken for what they are, " claims"..
 
I know people who swear by various Mechanic in a Can additives
and people who never use fuel additives
and I've come to the conclusion that both types have a similar end result
so I have learned to hedge my bets and use fuel additives on a occasional basis.

Worth pointing out I never noticed anything different one way or the other.

Fuel economy measurement outside of a lab environment is subjective,
so any claims otherwise should be taken for what they are, " claims"..

6400d provides rapid and measurable results, but it's the only additive I've ever seen do anything that quickly and quantifiable.
 
6400d provides rapid and measurable results, but it's the only additive I've ever seen do anything that quickly and quantifiable.
my thing with fuel economy readings on personal trucks is there are so many variables it is really hard to quantify unless you can control all the variables
for instance do you always get fuel at the same pump and fill the truck in the same manner.
do you always buy fuel at the same temperature because volume of a liquid does change with temperature.
do you always drive exactly the same way tankful to tankful
is every tank of fuel exactly the same quality of fuel
are the weather conditions different
do you have accurate long term fuel economy records with which to measure against.
etc.

give you a good example.. I pulled my fifth wheel from SWFLA to NW Montana.. total trip loaded fuel economy average was 9.87 mpg.
but indivdual tankfuls on that trip varied between as low as 8.5 mpg to as much as 11.5 mpg.
 
my thing with fuel economy readings on personal trucks is there are so many variables it is really hard to quantify unless you can control all the variables
for instance do you always get fuel at the same pump and fill the truck in the same manner.
do you always buy fuel at the same temperature because volume of a liquid does change with temperature.
do you always drive exactly the same way tankful to tankful
is every tank of fuel exactly the same quality of fuel
are the weather conditions different
do you have accurate long term fuel economy records with which to measure against.
etc.

give you a good example.. I pulled my fifth wheel from SWFLA to NW Montana.. total trip loaded fuel economy average was 9.87 mpg.
but indivdual tankfuls on that trip varied between as low as 8.5 mpg to as much as 11.5 mpg.

I wasn’t referring to fuel economy. 6400d is a DPF cleaner, a very effective one
 
It just mystifies me that if CARBON and CARBON DIOXIDE is the hazard to the Environment, largely through the burning of Fossil Fuels…that the Approved Solution is to BURN MORE FOSSIL FUEL to convert the filter clogged with CARBON to CARBON DIOXIDE.

How in H E double EL is that logical..?
 
It just mystifies me that if CARBON and CARBON DIOXIDE is the hazard to the Environment, largely through the burning of Fossil Fuels…that the Approved Solution is to BURN MORE FOSSIL FUEL to convert the filter clogged with CARBON to CARBON DIOXIDE.

How in H E double EL is that logical..?

it is logical in the sense that CO2 is the least harmful compound exiting the exhaust, the function of the DPF itself to capture Particulate Matter and convert it thru chemistry into less harmful compounds, CO2 being the least harmful thing they can turn that stuff into.. it isn't a perfect world but it is one solution to filling the skies with carcinogenic materials.
 
give you a good example.. I pulled my fifth wheel from SWFLA to NW Montana.. total trip loaded fuel economy average was 9.87 mpg.
but indivdual tankfuls on that trip varied between as low as 8.5 mpg to as much as 11.5 mpg.


Your FE in that case was 9.87. There’s nothing subjective about a long-distance average. That literally is the definition. (“I need 100-gallons per 1,000-miles of vacation-travel”).

As in my post befote that, test to find the potential high and that acquired number is thereafter the benchmark. All use otherwise is a percent greater than this.

There’s no hocus-pocus about something so simple. Log the gallons and read it against the miles. By calendar quarter or by year. The Annual Average Fuel Economy is the true number.

The only part that’s subjective is in lacking the control number. As otherwise you are reporting only what you can do. And “you” (whomever) may be a poor driver.

My current driving (errands loops) has me at 78% of that tested high (thousands of miles). Which is pretty nice as I’m always at GVWR these days. The absolute number that represents only matters if your truck spec is identical, and so is climate & topography before use is detailed.

Towing my travel trailer puts me at about 55-60%. The combined rig was spec’d for this job. At 80% useable this gives me a 400-mile range on a stock tank given no adversities are at play. (“I need 67-gallons per 1,000-miles of vacation-travel”).

A 5k vacation roundtrip would be approximately 340-gallons or less with mine were no other driving involved (solo sight-seeing). I’ve posted before that it’s possible to improve one’s Annual Average in daily driving based on 15k annually at CTD owner average of 15 that this 5k trip would be free given my rig where total gallons per year by price is the mark.

The operator is the weak link. The spread from steady-state highway to stop & go is what to tighten up if lower fuel burn is desired. Get the spread down to under 20% as under 15% is possible.

The tank-by-tank changes (“variables”) mean nothing by themselves. Feel free to break out specific uses, but they are still only a subset of the truck MPG.

The FE Average is to be able to predict. If moving the same load over the same route has become significantly more expensive — past maintenance & basic repairs needed — then the truck is worn out. Basic business analysis. FE is the easiest marker to track.

Change the truck? Test anew.

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