Greentech D11 Diesel Fuel Saver Set with Air Refiner — Diesel Cars, SUVs & Pickups (up to 100 L)
- 5–25% less fuel in documented results*
- About 10 years, no maintenance
- Patented in multiple countries
$229.00
One-time price · about $1.91 a month over its 10-year life- Fuel side and air side: an enhancer in the tank plus the Air Refiner on the intake.
- +16% km per litre: on a JMC diesel pickup in a Dubai company fleet.
- Firmer acceleration, quieter engine: as a Fiat Ducato owner reported.
- Enhancer fitted at a workshop: the tank is drained and it goes in through the fuel-pump opening or where the filler pipe joins the tank; the Air Refiner sits in the air filter housing.
- About 10 years: no maintenance, nothing to replace.
- Free shipping over US$150FedEx from Taiwan
- 12-month product warrantycovers the unit itself
- Genuine, serial-numberedverify it online
Secure checkout · PayPal · Apple Pay · Google Pay
Buying for a fleet? Get a volume quote →
*Documented fleet and test results. Each vehicle is measured against its own original fuel use, so the same fuel saved shows as a different percentage on different vehicles. Results vary with engine condition, load and route.
Made for diesel cars, SUVs and pickups
Diesel SUVs & pickupstanks up to 100 L
Vans & minibuseswork vehicles
Diesel family carseveryday drivingAny diesel tank up to 100 litres. The enhancer goes in the tank; the Air Refiner sits in the air filter housing.
Measured by the people who run them
Operators measured their own vehicles and machines before and after fitting. Tap a card for the original document.
🇦🇪UAE · Belhasa Engineering & ContractingD11+16%km per litre on a JMC diesel pickup in city driving: 8.68 → 10.05Signed letter →
🇭🇺Hungary · owner’s fuel recordD11−14.2%Fiat Ducato 2.8 TDI van: 8.60 → 7.38 litres per 100 km, with firmer acceleration and a quieter engineOwners’ records →🇭🇺Hungary · owner’s fuel recordD11−12.7%BMW X5 3.0d: 13.50 → 11.78 litres per 100 kmOwners’ records →
🇪🇹Ethiopia · government test (ECAE)D10−33.6%fuel on a diesel Toyota Hilux: 14.44 → 21.75 km per litreTest report →30 named fleets, plants and public agenciesin 8 countries, each with the original documentSee every case →“Firmer acceleration, a quieter engine and 14.19% less diesel.”
Each vehicle is measured against its own original fuel use, so the same fuel saved shows as a different percentage on different vehicles. Results vary with engine condition, load and route. All test reports →
Enhancer at a workshop, Air Refiner at the intake
It depends on the application
The enhancer must be in direct contact with the fuel, so it always goes inside the fuel tank.
Take the fuel cap off. Can you see the fuel?
✓Yes: drop it in
Motorcycles and scooters, generators and stationary machines, some boats and other machinery: the fuel is right there, so it is simple to drop the enhancer in.
!No: many cars
The filler often has an anti-siphon valve. The tank is reached through the fuel-pump or fuel-sender service opening instead: a job for a workshop, with the fuel drained first.
- 1Fuel-pump / fuel-sender service opening (usually under the rear seat)
- 2Where the filler pipe joins the tank, underneath
- ✕Filler neck and its anti-siphon valve
Never force it down a car's filler.It can jam in the filler pipe, and the pump nozzle will then keep cutting off every time you refuel.
Not sure? Have a qualified mechanic or an authorized Greentech installer do it. Labour costs vary, so ask for a price first.
Installation guide (PDF):English · 中文
⚠Fuel is hazardous and flammable. Do not smoke near the fuel tank.
Passenger cars are fitted in a workshop, so drivers come to you anyway. Distributors are appointed by country and product line.
Apply for the diesel line →Partnership models →Greentech is a patented, passive fuel enhancer. Proprietary Greentech Fuel Enhancing Technology helps the fuel atomize finer and burn more completely: more of every litre turns into work, with lower CO and HC emissions and fewer engine carbon deposits.
How the technology works →Plus the Air Refiner, in four steps
Product introduction and installation video. Motorcycles, trucks and machines take the enhancer through the filler; passenger cars are fitted at a workshop.
What could it save you?
Slide between 5% and 25%, the documented range.
Most documented results: 5–25% less fuel. Each vehicle is measured against its own original fuel use — the more efficient the vehicle, the bigger the denominator and the smaller the % looks, but the litres still add up. Results vary with engine condition, load and route.
Pick the size for your tank
D-Ballup to 20 LEnhancer
D10up to 100 LEnhancer
D11up to 100 LEnhancer + Air RefinerThis model
D202 × 100 L or 200 LEnhancer
D212 × 100 L or 200 LEnhancer + Air Refiner
D50up to 500 LEnhancer
D51up to 500 LEnhancer + Air RefinerChoose by fuel and tank size, one enhancer per tank. Models ending in 1 add the Air Refiner on the air intake. Product selector →
What you get
- D11 fuel enhancer (100 L) × 1
- Air Refiner × 1, with cable ties
- Serial-numbered security label
- Gift box
- Fuel
- Diesel
- Tank
- Up to 100 litres
- In the box
- Fuel enhancer (100 L) × 1 and Air Refiner × 1, gift box
- Fitting
- Enhancer: at a workshop (tank drained; placed through the fuel-pump opening or where the filler pipe joins the tank). Air Refiner: inside the air filter housing
- Maintenance
- None
- Service life
- About 10 years
- Construction
- Aluminum alloy casing with patented internal components
- Warranty
- 12-month product warranty, activated by registering the serial number
- Shipping
- FedEx from Taiwan · free over US$150
Questions before you buy
Will it fit my vehicle? How is it fitted?
Yes, if the diesel tank holds up to 100 litres. The enhancer is fitted at a workshop: the tank is drained, then it goes in through the fuel-pump opening, or where the filler pipe joins the tank underneath; labour costs vary by area, so ask the workshop for a price first. The Air Refiner goes inside the air filter housing, secured with the supplied cable ties. Generators and tractors with an open filler: drop the enhancer straight into the tank. See the fitting diagram ↑
Can a workshop become a distributor?
Yes, and workshops are a natural fit: passenger cars are fitted in a workshop, so drivers come to you anyway. Distributors are appointed by country and product line. Apply for the diesel line →
What does the Air Refiner do?
It treats the air side while the enhancer treats the fuel side. It sits inside the air filter housing, on the intake side before the filter, and any workshop can fit it in a few minutes with the supplied cable ties.
How much will it save?
Documented fleet and test results run from 5% to 25% less fuel. Each vehicle is measured against its own original fuel use: that figure is the denominator, so the same fuel saved shows as a different percentage from one vehicle to the next. Results vary with engine condition, load and route; on the road, the gain is largest at steady cruising speed. Tip: write down your litres and kilometres (or engine hours) for the next couple of tanks before you fit it, and you will see your own number. Free fuel worksheet (Excel) · Online fleet fuel log
Is anything changed on the engine?
No. Nothing is cut, wired or reprogrammed and nothing is added to the fuel. The enhancer simply sits in the tank and keeps working for about ten years.
What does the warranty cover?
Register the serial number and your unit carries a 12-month product warranty. It covers the unit itself: if something goes wrong with it after installation, we replace it with a new one. Verify & register a product
Shipping, payment and returns
Orders leave Taiwan by FedEx within 1–3 working days, and delivery usually takes 3–7 days. Shipping is free on orders over US$150; below that it is US$29.99. Pay with PayPal, Apple Pay or Google Pay. If a unit arrives damaged or defective, we send you a new one. Payment & return policy
How do I know it is genuine?
Every unit carries a serial number (M plus ten digits) and a security label. Check it online before or after you buy, no account needed. Buy from Greentech or a listed distributor. Check a serial number · Find a distributor
Buying for a fleet?
Tell us your vehicles and tank sizes: we match a model to every tank and quote volume pricing. In some countries a local Greentech distributor serves you directly. Get a fleet quote · Find a distributor
Treat the fuel and the air
The D11 complete set: about ten years, no maintenance.
Ships from Taiwan by FedEx · free over US$150 · 12-month product warranty
Greentech D11$229.00