Frequently Asked Questions

HOW DOES A TREATMENT WORK?

When mixed with an essential liquid of the vehicle (fuel, oil or coolant), a treatment will chemically remedy failures of the: engine, fuel system or cooling system when the problem is due to contamination or degradation of the fluid, rather than a mechanical one. 

DO I NEED TRAINING AS A MECHANIC TO USE THE WYNN’S TREATMENTS?

No, Wynn’s RETAIL treatments are very easy to use:

1. Open the cap of the fuel tank (for fuel treatments) or the oil reservoir (for oil treatments)

2. Pour the treatment into it,

3. Close the cap and responsibly dispose of the empty bottle.

CAN A VEHICLE BECOME ACCUSTOMED TO ADDITIVES?

No. However, the advantages of the treatments will fade after several thousand kilometres and it is recommended that you renew them on a regular basis. Please refer to product label.

CAN THE WYNN’S TREATMENTS IN ANY WAY HARM THE ENGINE?

Wynn’s treatments have been tested on most of the actual liquids available on the market and there is no known risk when they are used correctly. Always refer to the Direction for Use on the product label.

WHEN DO I HAVE TO POUR THE FUEL TREATMENTS INTO THE FUEL TANK?

In order to obtain a good mixture of the product in the tank, Wynn’s recommends you pour fuel treatments into the tank before topping up to ensure thorough mixing of product and fuel.

HOW MUCH FUEL WILL ONE BOTTLE OF FUEL TREATMENT TREAT?

The ratio of fuel treatments to fuel is not critical because the same quantity of detergent chemical passes through the fuel system and injectors/carburettors. Wynn’s Fuel Treatments are formulated so that one bottle treats up to 80 litres of fuel.

CAN THE WYNN’S PRODUCTS BE MIXED WITH ONE ANOTHER?

We do not recommend mixing any Wynn’s products. Certain Wynn’s products can technically be mixed, but the mixture will generally not increase the performance of the products. Moreover, prudence is called for and we recommend contacting the Wynn’s Technical Department for more detailed information.

CAN I USE AN ENGINE OIL TREATMENT DURING RUNNING-IN?

No – During the running-in period the moving parts of a new engine have to adjust to one another. We recommend using a Wynn’s engine treatments for the first time after the first oil change.

IS IT POSSIBLE TO USE WYNN’S FUEL TREATMENTS IN NEW VEHICLES?

The sooner you start treating your vehicle the longer you will preserve the good condition of your engine.

I WANT TO PROTECT MY ENGINE WHICH HAS HIGH MILEAGE, WHICH PRODUCT DO YOU ADVISE I USE?

If you want to protect your engine (with high mileage) against wear, we recommend Wynn’s 100,000km + Engine Treatment.

MY VEHICLE HAS NOISY VALVE LIFTERS. DO YOU HAVE A TREATMENT THAT WILL HELP?

Yes, you can try Wynn’s Engine Tune-Up & Oil Stabiliser but first flush out the old engine oil with the use of Wynn’s Engine Flush, change the filter, and add new engine oil and then the Wynn’s Engine Tune-Up & Oil Stabiliser.

MY VEHICLE EMITS A GREYISH BLUE EXHAUST SMOKE ON START-UP. DO YOU HAVE SOMETHING THAT FIX THIS?

Yes, you can try Wynn’s 100,000km + Engine Treatment. Please refer to Product Information Sheet for more information.

I USED THE PRODUCT WYNN’S ENGINE STOP-LEAK, BUT THE LEAK HAS NOT STOPPED. DO I HAVE TO USE ANOTHER BOTTLE?

Wynn’s Engine Stop Leak restores the elasticity of rubber and neoprene oil seal rings and O-rings of crankshaft, camshaft and valve stems. It will not repair a defective grooved or cracked seal. An overpressure in the oil crankcase can also cause leaks. In this case the condition of the oil circulation system has to be checked.

MY CAR HAS DEVELOPED A SMALL LEAK IN THE RADIATOR. DO YOU HAVE A PRODUCT THAT CAN STOP THE LEAK?

YES. Wynn’s Radiator Stop-Leak, provided the hole is not too big or a slit not too wide. The product is only a temporary repair solution until the radiator can actually be repaired by a mechanic.

DOES WYNN’S RADIATOR FLUSH CLEAN THE ENGINE BLOCK?

Yes. The engine block is integrated in the cooling system, so Wynn’s Radiator Flush cleans the whole circuit. The product is named like this because the radiator is the most vulnerable element. For this operation requiring the cleaning, filling and purging of the system we are at your disposal to give you technical advice, as some precautions have to be made during this procedure.

WHAT IS THE DIFFERENCE BETWEEN YOUR THREE PETROL FUEL TREATMENTS?

Wynn’s Petrol Complete Fuel System Cleaner (PCFSC) is a latest technology treatment which can clean the whole fuel system including injectors, fuel pumps, fuel lines etc. and keep these components clean up to 10,000 km. This should be the first choice treatment if you are care about the internal cleanliness of the engine. For a quick way to improve the engine performance, Wynns Petrol Injector Cleaner can be used. This product targets & cleans the deposits on the injectors quickly and effectively and will keep the injectors clean for up to 5,000 km.

Wynn’s Petrol Power Boost is for people looking to boost the engine horsepower of their vehicle. The effect is instant but will only last with the treated tank of petrol.

WHAT IS THE DIFFERENCE BETWEEN YOUR TWO DIESEL FUEL TREATMENTS?

Wynn’s Diesel Complete Fuel System Cleaner (DCFSC) and Diesel Injector Cleaner work similar to the Petrol versions i.e. DCFSC is a 10,000km treatment and Diesel Injector Cleaner is a 5,000 km treatment. In addition, Wynns’ Diesel treatments address the most common problem in diesel fuels i.e. growth of micro-organisms.

CAN THE WYNN’S TREATMENTS IN ANY WAY HARM THE ENGINE OR THE CATALYTIC CONVERTER?

NO. Wynn’s treatments are developed to suit the latest designs of engines and their emission systems, including various sensors used in the engine system.

WHAT CAN HAPPEN IF I PUT THE WRONG ADDITIVE INTO THE WRONG COMPARTMENT OF THE ENGINE?

Wynn’s retail treatments for DIY are developed with the everyday consumer in mind. In general, if one bottle only is added incorrectly e.g. putting a petrol additive into a diesel engine fuel tank, the additive is still soluble in the diesel and should not make the engine inoperative. We do recommend topping up the fuel tank in this instance to dilute the product. On the other hand, if a fuel additive is accidentally added to the engine oil, again no immediate damage would occur. We do recommend changing the oil as early as possible, as the lubrication quality of the engine oil may be affected. The same principle applies in many similar instances. If in doubt please call the Wynn’s Technical Info Line: 1800 177 989.

ARE WYNN’S DIESEL FUEL AND OIL TREATMENTS SUITABLE FOR COMMON RAIL DIESELS?

Yes. Common Rail Diesel (CRD) engines become the norm now for newer diesel passenger vehicles. This is possible because the availability of Ultra Low Sulphur diesel in Australia and New Zealand. Very often, these CRD engines come with sophisticated emission control systems which can be affected by the sulphur of the diesel fuel. Wynn’s Treatments are carefully formulated to avoid any harmful effect to the engine or the emission system.

CAN WYNN’S TREATMENTS FIX ENGINE WARNING LIGHTS?

The answer is “it is worth to try”. Many of the engine warning lights are related to the emission control systems. If the engine is running better with the Wynn’s Treatment, it is likely that the engine warning light may disappear. Wynn’s Petrol Power Boost is particular effective in overcoming engine warning lights in some models of engines, as the Octane number of the fuel is raised.

CAN WYNN’S TREATMENTS OVERCOME THE CARBON BUILD UP ISSUE IN DIESEL ENGINES?

Not directly. Again, the better the combustion, the less carbon is built up in the engine. The carbon built up problem is caused by the quality of the fuel and the city driving cycles which are difficult to change or avoid. Hence, as a preventive measure, it is beneficial to add Wynn’s Diesel Fuel treatments to diesel fuel.