Understanding Additives?

Your car is usually the second biggest investment you make after your home, and its engine must endure a lot during its lifetime; wear, contamination, heat, leaks etc.… So, it goes without saying that maintaining the engine is essential to ensure it has a long life and performs as it should.
What are additives:
Additives are chemical ingredients in oil, fuel and coolant that prevent contamination and solve problems associated with these essential fluids on which your car operates. These may include detergents, dispersants, viscosity improvers, anti-corrosives, anti-wear and friction modifiers among many others.
They are by no means foreign to the engine but already form part of many commercial oils, fuels and coolants on the market today which raises the question…. why do we need aftermarket additives?
Well as your car ages common problems arise which require intervention outside the usual maintenance regime e.g. clogged injectors, blocked soot filter, high exhaust emissions, poor engine performance, excessive fuel consumption, leaks, and even bad smells, all of which can easily be solved or prevented by using additional “vitamins” or additives specially formulated to deal with these very issues. It’s not because the oils, fuels or coolants we choose are necessarily of poor quality, but rather due to various conditions the engine is exposed to over time and often not designed for such as stop start city driving where the engine rarely reaches optimal temperature, or immanent wear and tear leading to leaks and contamination.
Additives can offer an alternative to many costly mechanical repairs saving you a lot of money.
Ten good reasons to consider using additives in your vehicle:

1) Restore lost engine performance
2 Prevent fast degradation and ageing
3 Protect and lubricate parts
4 Reduce harmful exhaust emissions
5 Prevent or reduce high consumption
6 Clean systems fouled by impurities
7 Prevent fouling of engine parts
8 Prevent seasonal problems
9 Stop leaks
10 Solve bad smell problems

TMF Wynn’s Slalom Event Madagascar

Wynn’s Madagascar recently sponsored the TMF Wynn’s Slalom event, introducing the Wynn’s brand in spectacular fashion.
The response from participants and spectators alike has been extremely positive and look forward to future Wynn’s events and support.

Thanks to the team at MaterAuto for the feedback and continued commitment to the Wynn’s brand.

Wynn’s Coolants & Antifreeze

Some COOL Facts

What you didn’t know about Antifreeze!

Most automotive antifreezes are Ethylene Glycol based, an essential chemical to prevent the radiator water from freezing and also provides some lubrication benefits.

At a 40% ratio to de-ionized water, glycol can drop the freezing point down to about -45o C, never to be experienced here in South Africa, so why is an antifreeze so important?

According to studies performed in the US, over 60% of mechanical break-down is directly attributed to cooling system failure. The radiator and cooling system is required to remove 33% of combustion heat from the engine block to maintain optimal operating conditions.
So perhaps it’s more appropriate for us to rather talk about antifreeze as a coolant, after-all, this is its most important function.

There are two main types of coolant, traditional/ inorganic or silicate (Type B) coolants and the OAT Organic Acid Technology or extended life (Type D) coolants.

Both types are ethylene glycol based but differ quite dramatically in the corrosive inhibitor and additive technology. These are essential ingredients to prevent not only corrosion but cavitation pitting, foaming, calcareous scale deposits as well as providing pH stability.

There is no doubt that the newer OAT type is the coolant of choice for most OEMs today, but what if you choose to use this in your old classic?

From about 1980, radiators started to change from copper/brass cores to aluminium which has both weight and environmental benefits and now the most common radiator in use.

OAT coolants are generally suitable for these radiators but not necessarily for the older copper and brass cores with older gaskets and seals which can be incompatible with the carboxylate additives in the OAT Coolant.

So if you have an old classic, stick to the traditional Type B coolant, it might get “used up” quicker as the silicate is chemically depleted, but will not cause leaks or damage the radiator core.

The coolants are often distinguishable by colour; traditional type B coolants in blues or greens while OAT’s are often red, pink or orange.

It’s always best practice to flush and drain the radiator before changing any coolant as silicates and carboxylate additives are not always compatible and scale deposits often need to be chemical removed from the radiator surface in order to restore optimum heat transfer.

 

Fuel Stabiliser

Yes, petrol does go stale.

Whether you are storing fuel in a gerry can or just not using a recreational vehicle regularly enough, the fuel will start going off.

In as little as 3 weeks, fresh petrol can start changing its chemistry due to oxidation, often accelerated by the presence of dissolved metals in the fuel.
After 5 weeks’ fuel can be 5% heavier and 5% richer air fuel ratio.
This process presents itself in the formation of gums and varnishes which clog up the fuel delivery jets especially in carburetors, making starting difficult, as well as peroxides which can eat away at metals and rubbers in the fuel system.
Incombustible deposits foul up the combustion chamber while the oxidized fuel (often darker in colour) becomes denser making the air fuel mixture too rich leading to running problems.

By using a Fuel Stabiliser in the fuel when an engine stands over prolonged periods, prevents this oxidation as well as corrosion, allowing better combustion, performance and less maintenance.

Also works in diesel.

Valve Guard Lead Substitute

What is unleaded petrol doing to my engine?

Tetra-Ethyl Lead, although somewhat unfavorable to the environment, was an essential sacrificial lubricant and heat dispersant between the valves and valve seats to prevent Valve Seat Recession especially on the older cast iron and even some aluminum cylinder heads.

Many owners of older cars are unaware that VSR is an aggressive wearing process which often results in very costly head and valve repairs if not addressed correctly.
Valve Seat Recession occurs mainly on the exhaust valve where high temperatures (in excess of 800o C) combined with the constant impact of the valve on the valve seat result in a welding between the two surfaces breaking tiny particles from the seat to form an abrasive iron oxide globule on the valve. This abrasive action causes more and more wear until the valve recedes into the head leading to misfiring, loss of compression, valve train geometry misalignment and ultimately catastrophic damage to related components.

With the phasing out of LRP it is important to use a lead replacement additive such as Wynn’s Valveguard to act as a protective heat dispersing lubrication layer between the valve and seat.
Provides better valve sealing and is stable at high temperatures, it is a boundary lubricant not to be confused with the hydrodynamic upper cylinder lubes or valve train lubricants which will not protect against Valve Seat recession.

 

 

Wynn’s Oil Check List

Is the OEM oil spec still appropriate for your older engine?

 

Engine Oil requirements have changed dramatically over the years, moving towards environmentally acceptable, low SAP and catalytic converter safe oils which are becoming commonplace for our
modern vehicles, but are these oils meeting the requirements of your older high mileage car?
Older cars with high mileage often require a few extra ‘vitamins’ 20 – 30 years down the road as engine tolerances , wear and tear and general aging of components have long since exceeded the limitations of the original oil spec.

The Wynn’s Engine Oil Check list:

Noisy tappets and valve train
Older valve train and flat tappet type arrangements relied heavily on specific anti-wear additives such as ZDDP (vastly reduced in modern oils) to form essential sacrificial boundary lubrication between friction surfaces.
Wynn’s Hydraulic Valve Lifter Concentrate prevents contamination often associated with sticky valve lifters but also contains anti-wear additive ZDDP to protect and quieten noisy tappets and valve train.

Using oil – As an engine wears, friction and heat increases causing the oil to become thinner and less effective compromising film strength as well as allowing blow-by and oil seepage into the combustion chamber. Compression is lost and blue oil smoke is often the result of burning oil.
Wynn’s Charge is a Viscosity Index Improver to prevent oil thinning as temperature increases providing better oil film protection while preventing oil seepage past the compression rings reducing smoke and restoring compression.

Shrunken or hardened valve stem seals – Elastomer components deteriorate over time losing their ability to flex and seal as intended. Rubber/ Nitrile valve stem and oil seals are commonly the cause of leaks resulting in smoke, engine fouling as well as external oil leaking.
Wynn’s Engine Stop Leak is a Viscosity Index Improver with special seal nourishing additives to prevent not only blow-by oil loss, but rejuvenate hardened oil seals preventing further leaks.

Contamination –We all know that clean, uncontaminated motor oil is essential for today’s high performance as well as older engines and although manufactures are obliged to be ISO 9001 certified to ensure that their oil is 100% contamination free, deposits are formed under a variety of conditions such as high temperatures, fuel dilution and combustion gasses leading to oil oxidation and acidity. These contaminants form gums, varnishes and sludge deposits which immediately degrade any new oil when added to the system if not thoroughly removed before an oil change.
So why do we add clean “ISO certified” oil into a dirty engine?

For many years, flushing the engine oil was controversial as engine lubrication could be compromised, but with today’s advanced chemical technology, oil system flushing has become an essential part of best practice for vehicle maintenance as an oil system preparation for the optimal performance of new oil.

 Wynn’s Oil System Flush is specifically developed to meet the latest Euro spec vehicle and oil demands, performing complete oil system cleaning from the sump through to the narrow oil galleries while preventing wear.
Preventative maintenance is always best, so why not use a well-balanced Advanced Engine Treatment to boost the Total Base Number (TBN) preventing oxidation and sludge formation while providing a friction proofing for extra lubrication and oil efficacy, extending the oil life and increasing engine performance.

Clean fresh air thanks to Wynn’s

Prepare for the air conditioning season!

Air conditioning is no longer a luxury item fitted only to prestigious cars, these days the majority of vehicles on our roads have air conditioning or climate control. And let’s be honest, what is more pleasant than driving on a hot summer’s day with a cool refreshing breeze ?

However, air conditioning is not maintenance free and its operation can be seriously affected resulting in a less pleasant driving experience. All kinds of bacteria including legionella, moulds and other micro-organisms, industrial pollution, exhaust gases, nicotine and pollen can build up in the air conditioning system. When the air conditioning is switched on, this contamination is blown into the passenger compartment where it is inhaled by the driver and his passengers.

A direct consequence of inhaling this contaminated air can be complaints of irritation to eyes and bronchial tubes, bacterial infections, allergic reactions, and often most noticeably unpleasant smells in the passenger compartment.

Air conditioning problems can be easily solved with Wynn’s Airco-Clean® treatment: the perfect and efficient solution thanks to the very fine nebulization (< 5 micron) of the Wynn’s Airco-Clean® liquid that passes through the pollen filter (including carbon filters) with the Wynn’s Aircomatic®III machine. In this way a maximum effectiveness is achieved; 100 % penetration of the heater box and evaporator unit is accomplished and all bacteria are killed in the whole air conditioning system. Wynn’s Airco-Clean® treatment can be done without any component removal, and the whole process only takes 20 minutes!

Wynn’s Aircomatic® program, consisting of Wynn’s Airco-Clean® and Wynn’s Air Purifier treatment in combination with the Wynn’s Aircomatic®III machine, offers the best treatment with guaranteed results. Garages and workshops can expand their service offer to their customers with the Wynn’s Aircomatic® program and profile themselves as a specialized workshop in air conditioning treatment.