TESTIMONIALS
our testimonials
Want to see other's experience with DF5?
At GreenTec Labs, we value the feedback and experiences of our customers. Here are some testimonials from satisfied users of DF5.
"My wife is an owner of a 2004 Cadillac SRX that has a computer read out for MPGs and uses
Premium 92 Octane gas. This car was never above 15.5 in the city and rarely over 22 MPGs on
the highway (It is EPA Fuel Economy rated 15 City and 21 Highway). I added DF5 and the
first tank I noticed a significant difference in performance (better pickup and smoother drive)
and an immediate increase in Fuel Economy. The computer readout went to over 18 around
town and when I got on the highway it was consistently above 24 MPG to eventually 26 MPGs
highway by the second tank. As of today, this car with the DF5 alone is consistently above 18
City and 24 Highway with a combined average of over 19.5 MPG. This is extremely significant
as I can already notice a positive change in the amount spent monthly on gasoline in the family
expenses which is visibly evident to both my wife and I".
Matt Huffer
"My truck has approximately 200K miles on it. My mileage is a mixture of highway and back woods trails. I
live in Northern Michigan and drive in some very harsh winter conditions. During the winter I see my fuel
economy drop considerably and note an increased smokey exhaust. My truck for the most part is unmodified
(not chipped). It does have oversize snow tires and a Banks exhaust. Since I have started using DF5, there is
an increase in my fuel economy. My combination in-town and highway fuel economy went from 15.3 mpg to
18.1 mpg. On pure highway driving I have gone from 18 mpg to 22 mpg. My ability to cold start at extreme
temperatures (below 10F) with winter diesel fuel remains excellent. I have noticed a significant decrease in
the smokey exhaust at startup during these cold temperatures".
Chris Smith
This was a brand new 2023 Toyota Camry at the time of testing. 1800 plus miles. We ran our
test loop 100 miles to find our baseline mileage, then added one oz of DF5 Fuel SuperFood.
We reset all computers, ran the same 100 mile test loop 100 and saw an 11% increase in
miles per gallon. We decided to run the 2023 Camry one more day to let DF5 get thoroughly
into the engine and fuel system, reset computers and repeated our test loop. On day two we
saw an 18.7% increase in miles per gallon (see attached Camry MPG photo). After 8 years of
engineering DF5 for gas and diesel these numbers fall in line with what we see.
Anonymous
"My truck is a 2013 4WD GMC 2500 with a Duramax 6.6L engine. I just turned 140,000 miles on it.
The truck is lifted 8” with huge 37-inch tires, so I typically get bad mileage. I have rarely seen it
get better than 12 MPG... now I'm on my third tank of DF5 in my GMC Diesel Truck. Yesterday I went
150-miles round trip, all highway miles. I averaged 14.3 MPG. That is about 19% better than I have had
before. It took three tanks of fuel to get there, but I am a believer now".
Keith Smith
"I have been trucking for 40 + years and done just about every aspect of trucking there is to be done.
Currently doing oversized equipment and vehicles with a lowboy trailer on six axles. I’ve become sold
on the fact that not only is DF5 a good mileage increaser and a decreaser of emissions and smoke,
but it also worked as an anti-gel for me. I just don’t have anything but wonderful things to say about this
product. It’s just absolutely amazing! My savings is $5-7 thousand a year after my expenses.
You multiply that by the number of trucks in your fleet and that’s what you’re looking at".
Tim
"According to my calculated numbers, my fuel economy has gone from 12.3 MPG to 15.6 MPG
since introducing DF5 to my fuel. However, this number, even though showing an increase in MPG, is
incorrect due to the fact that I have approximately 100 hours of idle time in the equation. I have been testing DF5 32 days for an idle test. What happens is when you let these engines idle
for 12 to 15 hours, the particulate filter will require a regen burn every two to three days due to low flow
of exhaust. Since DF5 I have have yet to require a regen burn at all. From 8 to 12 a week to zero. So
good job there".
John Speck
I bought my truck from the original owner and it had 120,000 miles on it---it now has
417,000 (WOW). It originally was getting around 11.8 to 12.2 mpg. Those numbers
line up with all online data about my truck. I was content. I drove it a lot across the
country, mostly freeway miles, always changed the oil and did regular maintenance. I
was well DFTXDLQWHG with the mpg as I drove my truck long distances.
In February of 2020, I had to have my F150 renewed for its annual registration, so I
had the emissions done at DQADOT emissions test site. It passed and the numbers
for each particulate is listed on the emissions test. After reading about GreenTec
Labs product called DF5, I added one ounce to my gas tank to see if the claims were
true. I am not a person who uses additives as I have found they most of the time do
very little.
After using DF5 in my gas tank for forty (40) plus months, I returned to the same
ADOT emissions testing center, paid the fee and had it tested again---I was shocked!
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FDUERQPRQR[LGH
GHFUHDVHG SHUFHQW+&
K\GURFDUERQV
GHFUHDVHG SHUFHQWDQGWKH12;
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believe it because the tests were done by the official ADOT emissions testing center.
Then I kept seeing my fuel mileage change and get better. To prove it to myself, I
kept detailed gas receipts for 1 1⁄2 years, yes I said 18 months. I am somewhat of a
doubting Thomas I suppose. DF5 consistently showed that my mpg went from 11.8
mpg average to 14.5 to 15 mpg. See the receipts. I finally believed the validity of DF5
after
testing it for nearly two years. DF5 truly eraseV emissions and increases fuel mileage
and that’s a product that I am glad to support.
Brent Harley
Why you should Join us
you are missing out on savings
At GreenTec Labs, we are committed to providing exceptional products and services that deliver real value to our customers. Here are compelling reasons why you should choose us:
Proven Results
Our DF5 fuel additive has undergone rigorous testing and has consistently demonstrated significant improvements in fuel efficiency, emissions reduction, and engine performance. The results speak for themselves, with customers reporting substantial cost savings and operational benefits.
Environmental Responsibility
We prioritize sustainability and strive to make a positive impact on the environment. By reducing greenhouse gas emissions and pollutants, our products help you contribute to a cleaner, healthier planet.
Cost Savings
With DF5, you can save up to 10% on fuel costs and reduce your overall operational expenses. Our customers typically see an annual savings of $7,000 per truck, making DF5 a smart financial investment for any fleet.
