Who are Carvern?

What is UNICAT4Petrol?

What is UNICAT4Diesel?

What is UNICAT4FurnaceOil?

How does UNICAT4 work?

Who uses UNICAT4 products?

How does UNICAT4 help reduce my maintenance costs?

Have any users ever experienced engine problems?

What are the environmental benefits?

What are the benefits for industrial boilers?

Does that mean I can use it in my oil-fired central heating boiler?

Who are Carvern?
Carvern Petrochemical Co. Ltd. manufactures liquid combustion fuel additives under the trademark CV Products™, which we sell branded as UNICAT4 which is formulated for use in petrol, diesel and heavy fuel oils respectively.

Carvern Petrochemical Co. Ltd.
833 Helena Street, P.O. Box 309  Fort Erie, Ontario  Canada L2A 5N1.
Tel: 905.871.2844 

What is UNICAT4Petrol?
UNICAT4Petrol is a preparation formulated for use in all petrol grades.

What is UNICAT4Diesel?
UNICAT4Diesel is a preparation suitable for diesel fuels & paraffin.

What is UNICAT4FurnaceOil?
UNICAT4FurnaceOil is a preparation specifically for heavy fuel*.
*Delivery currently restricted to 2/3 weeks.

How does UNICAT4 work?
These Unicat4 Products function as combustion catalysts at the moment of ignition when blended with the respective hydrocarbon fuel. The effect of the catalytic reaction is that a more uniform and thorough combustion occurs. With more complete combustion of the fuel, there is an improvement in fuel economy because less fuel is used to achieve the same torque, a reduction in carbon buildup which results in lower maintenance costs, lower harmful exhaust emissions and a significant reduction of visible smoke.

Who uses UNICAT4 products?
UNICAT4 is used by engineering consultants, sales reps, farmers, hauliers, caravanners, 4x4 and classic car enthusiasts. The products are used in a broad range of equipment including bulldozers, forklift trucks, excavators, lorries, buses, generators, combine harvesters, tractors, central heating boilers, all makes of cars and motorbikes, lawn mowers and the list goes on.

How does UNICAT4 help to reduce my maintenance costs?
Unicat4 users benefit from reduced maintenance, increased engine life and an extended time between necessary engine overhauls. Unicat4 significantly facilitates equipment maintenance during all stages of the combustion process. As a preburner conditioner the hydrocarbon carrier in Unicat4 cleans the fuel tanks, lines, and pumps. In the combustion chamber Unicat4 minimizes engine damage (caused by wear and localized heat buildup) by reducing deposits of substances like carbon and vanadium. Cylinder heads, pistons and other integral parts can be wiped clean with only a soft dry cloth instead of requiring solvents and heavy abrasives. In the exhaust system, Unicat4 virtually eliminates the corrosion and trumpeting on the valve stems and feet, and keeps the turbochargers and exhaust manifolds free of soot and harmful carbon buildup.  The significant improvement in engine condition with the use of Unicat4 has an equally beneficial effect on engine life. Equipment rarely needs replacement parts because it experiences as little as half the normal wear. Less equipment down time is financially beneficial because reduced maintenance lowers costly labour and part replacement expenses.


A comparison of carbon buildup on pistons
without UNICAT4 (top) and with UNICAT4
(below) in V6-71 Detroit Diesel engines


Piston crown from this Caterpillar 3406 engine
shows very little carbon encrustation on the rim


The center cylinder valve recess area clearly
shows the lack of carbon and residue buildup in
this Caterpillar D353 engine with 8200 hours
(UNICAT4 used for the last 2000 hours)



Have any users ever experienced engine problems?
Carvern Petrochemical Co. Ltd. has manufactured UNICAT4 since the early 1970s. To date there has never been a complaint from a customer that UNICAT4 has caused damage to either an internal combustion engine or industrial boiler in which it was used. Carvern Petrochemical Co. Ltd. has carried for 35 years, a Worldwide Product Liability Insurance Policy and in that time there has never been a claim made. 
Furthermore Carvern Petrochemical Co. Ltd. guarantees that UNICAT4 will not cause damage to any internal combustion engine or industrial boiler in which they are used provided they are blended in the respective fuels at the manufacturers recommended treatment ratio.

What are the environmental benefits?
Pollution control and harmful emission levels are important concerns for companies for many reasons: since the Kyoto summit governments have and will continue to create stricter legislation, public opinion demands reduced waste and cleaner air, and simple combustion chemistry demonstrates that it is advantageous to lower harmful emissions. While government plans and public opinion may not directly determine the priorities of a company, combustion efficiency is an important issue which is essential to any company's success. Improved combustion of fuel, results in a reduction of harmful emissions.


If the combustion of a pure hydrocarbon fuel were complete, carbon dioxide and water would be the only reaction products. Other chemical compounds present in
the exhaust gas, such as carbon monoxide, particulate carbon, unburned hydrocarbons, and partially oxidized hydrocarbons (aldehydes, ketones, acids, alcohols) are indicators of incomplete combustion. Therefore, a reduction of these emissions indicates a greater efficiency.  By using UNICAT4 treated fuel in their equipment, companies have been able to solve their smoke and emissions problems. Long before heightened environmental awareness made emission an important issue, Unicat4 customers experienced reductions of harmful compounds including the virtual elimination of smoke and the sulphur odour that had previously contaminated enclosed areas like powerhouses, garages, and mines. These companies have shown that Unicat4 treatment results in a reduction of unburned and partially unburned hydrocarbons by as much as 80%, carbon monoxide by an average of 50%, and visible and particulate smoke significantly. NOx emissions are reduced in some applications by as much as 40%.

What are the benefits for industrial boilers?
Reduced maintenance and wear extend the life of equipment, limit the amount of labour required for facility upkeep, and generally lower operating costs. UNICAT4FurnaceOil facilitates the maintenance of boilers in three different stages of operation. As a preburner conditioner, the dispersant carrier in Unicat4.3 maintains clean filters and protects the life of fuel pumps from burnout by keeping the tanks and lines free of sludge. UNICAT4 also keeps injectors and nozzles clean and prevents seizing and fouling. In the furnace, the improved combustion reactions (catalyzed by UNICAT4) reduce carbon accumulation on water and fire tubes. Unicat4.3 also limits corrosion damage by minimizing the production of vanadium pentoxide. UNICAT4 minimizes pitting, metal fatigue and cold end corrosion by lowering sulphuric acid production in the heat recovery system, air ducts, and stack.  UNICAT4 inhibits the formation of vanadium pentoxide. In the process of improving the oxidation reaction, the catalyst expends the free O2 which would otherwise react with vanadium compound (V2O3) to produce V2O5, UNICAT4 also reduces the catalyzed oxidation of SO2 to SO3, thus preventing the formation of H2SO4.  After the fuel has been treated with the UNICAT4, burner adjustments should be made to allow the boiler to operate with lower excess air, thereby reducing heat losses and increasing the heat recovery effectiveness of the boiler. Tube blowing frequency is reduced. With the reduction of carbon buildup on tubes and other areas, annual maintenance scheduling can be extended six months or longer.

Does that mean I can use it in my oil-fired central heating boiler?
Unicat4Diesel is the ideal product to use on 28 second heating oil and 35 second gas oil.