C99 Gasoline

C99 petrol (All Petrols)

How it works  :

C 99 modifies the surface tension of fuel molecules   (carbon chain type C6) to obtain a larger contact surface with oxygen and a homogeneous oxidant/fuel mixture, achieving ideal combustion and improving the operating parameters of thermal engines.

C 99 accelerates the air/fuel mixture at any engine speed, hot or cold, achieving a much more homogeneous injection beam at ignition and a very high combustion speed, converting all the fuel into energy, so that the money you save is no longer wasted through the exhaust in the form of polluting black fumes.  Remark: Incredibly, MOT measurements of pollutant gases show a 4 times lower reading of Hc and Co.

C 99 Petrol is also equipped with an anti-friction feature which prevents seizure and clogging of the injection system or carburetion. C 99 Gasoline avoids deposits from rubber and lacquers that foul the tank and injectors and are also responsible for seizures or blockages in the engine's fuel system (see photo).

C 99 Petrol achieves CO readings below 0.005 in the ITV test.

For this reason, Mecarun offers you the following guarantee:

ITV gas check: If you are not satisfied, you get your money back!

Less pollution, less fuel consumption



 Gas reading ITV before without C99 and after with C99

C 99 avoids the corrosive effects of ether and ethanol

(see detrimental effects on pipes and seals).

The anti-friction function of C 99 is a great advantage.

Protects the fuel system right up to the firing segment and reduces the loss of lubrication of current petrols in accordance with Euro 3 and Euro 4 standards.  It prevents fouling of the lambda sensor or loss of charge in the injection pump due to the usual heavy wear caused by ethanol, water, alcohols, lacquers, rubbers and corrosion.  The amazing functions of the C 99 Gasoline achieve good engine performance and keep the lambda sensor clean. It is specially designed for cars, boats, ultralight aircraft, quads, scooters and all 2 and 4 stroke engines.

C 99 Petrol achieves a quieter engine. Reduces or eliminates detonations of unburned fuel in the exhaust. Gasoline storage: C 99 allows slowing the octane drop caused by prolonged storage. Some state agencies will store it for up to 5 years.

C 99 reduces Co² emissions and fuel consumption: see our testimonial pages. C 99 Petrol allows you to save money that would otherwise go down the drain and pollute the environment. C 99 avoids maintenance operations caused by carbon build-up and engine fouling,

C 99 Gasoline avoids damage caused by electrolytic torque which corrodes metal in the injection system and carburation. Methyl tert-butyl ether or MTBE with formula C5H12O is a colourless, volatile, flammable liquid ether that is not miscible in water.


Easy to pour thanks to its dosing bottle and filling spout


If you are not satisfied, we will refund your money*.

* If after using Eco 10,000 250 ml or C 99 which treats 1,000 litres of fuel or a Mecarun cleaning treatment (see specific page) , you have to pass the MOT again due to a fault in the gas control or you have to replace the EGR valve or the FAP, Hi-Tec International will refund the cost of your bottle of C 99 250 ml or your Eco 10 000 250 ml. * The vehicle must have had its air filter and diesel filter recently replaced before passing the MOT. * Valid only for orders placed online or at an authorised point of sale. Excludes shipping costs.

* You must have the purchase invoice for the product and, if applicable, the invoice for the replacement of the FAP or EGR valve, plus a copy of the negative anti-pollution result from the MOT.

How to pass the ITV gas control

Petrol Anti-Carbon Pack

With the Mecarun anti-carbon pack,
If you are not satisfied, you get your money back.
For any petrol or diesel vehicle of any age.

Toyota Hybrid de Hi-TecC 99 and hybrids

C 99 reduces fuel consumption and pollution when starting the engine (see anti-pollution testimonials). The initial wear of the engine is due to the lack of lubrication during the first rpm. P18 antifriction prevents this.

Likewise, hybrid vehicles and those equipped with the Stop and Start system tend to suffer from wear due to continuous state changes from electric to motor mode. C99 and P18 are ideal in this circumstance to lower consumption and prevent engine wear.

1 gram of petrol burned emits 3.09 grams of CO2 x mass of petrol = 2.28 kg of CO2 per litre of petrol burned. 2228 gr / 120 gr = 19 km per litre of petrol = 5 litres / 100 km

C 99 reduces Co², HC and CO. The catalyst converts carbon monoxide to carbon dioxide: 2CO + O2= 2CO2:

C 99 reduces CO emissions by up to 4 times and keeps the lambda sensor clean, allowing optimum engine performance (see Yamaha XMAX and other petrol vehicles report on Mecarun's anti-pollution page). Oxidation of unburned hydrocarbons (HC) to carbon dioxide and water: 4CxHy + (4x + y) O2= 4xCO2 + 2yH2O:

Sonde Lambda XMAX

C 99 reduces carbon and pollutant gases

Sonde lambda3

Without C99 - lambda probe - with C99

sonde lambda2

injection pump flow

Giant explosion

Oxidation reactions 

require a high oxygen supply, in contrast to reduction reactions. The reading of this reaction is taken by the lambda sensor, sending the data to the engine management computer. The C 99 keeps the lambda sensor clean and operational for optimum performance, as well as allowing minimum fuel consumption.

Fuel economy is key to pollution reduction in cars, motorbikes, heavy duty vehicles, trucks, marine, tractors and agricultural machinery.

C 99 reduces carbon build-up in the catalytic converter, EGR valve, FAP particulate filter and turbo. Mecarun means ecology, environmental protection, elimination of carbon and black smoke, success in MOT gas control and reduction of water, bacteria and sludge in the tank.



Mecarun is the benchmark for reducing consumption and saving energy ...

With Mecarun, your car will have nothing to envy to a Formula 1 engine.

Mecarun means eco-driving, environmental protection, reliability, anti-friction, engine cleanliness, fuel saving and a significant reduction in maintenance costs for all types of vehicles.

Mecarun takes care of the catalytic converter, the particulate filter, the EGR valve, the turbo and other components of thermal engines and allows a significant reduction in maintenance costs.

Posted in C99.