Frequently asked questions

Keeping engine components clean is essential as it keeps them in good condition. If your engine components are dirty, oil may not be lubricating and protecting the engine properly. Dirt build-up can also lead to premature engine damage. Shell Helix engine oils are designed to clean and protect engines for improved performance.

Oil is the lifeblood of your car. If the wrong kind is used, the engine is at risk of increased wear and corrosion. Formation of blockages can also lead to engine seizure. By putting Shell Helix oil in the engine, you can carry on motoring with confidence and experience the feeling that your car has just been serviced – all for less than the cost of a tank of fuel.

In many ways:

• By cleaning the engine – Shell Helix oils are designed to clear away dirt, debris and deposits from engine components and to prevent blockages in important oil ways. The oil helps to lock up the dirt and render it harmless until it is removed at the next oil change.
• By reducing friction and minimising wear – Shell Helix oils form a protective film over your engine components and have special additives that act between the moving surfaces to prevent contact and reduce drag. This helps your engine to operate as quietly and effectively as the designers intended.
• By removing heat – Shell Helix oils carry heat away from hot areas, such as around the piston rings where the temperature can reach up to 320°C, and redistribute it around the engine.
  By preventing corrosion and rust – Shell Helix oils help to protect your hard-working engine components from corrosion beyond the normal oil-change interval. Benchmarking studies show that Shell Helix oils provide best-in-class protection and help to extend your engine’s life and avoid some expensive repairs.

Car-owner handbooks will give you a minimum oil specification. However, you may wish to trade up to a better specification engine oil. Choosing the correct engine oil for a vehicle depends on:

• the car’s type – a high-performance car needs higher performance oil.
• the car’s age – a lot is expected from new technology engines: high performance coupled with fuel efficiency. Advanced oils have been developed to help keep pace with increased engineering demands. For example, modern cars have blow-by-gas recirculation that can cause extreme oxidation in old-technology oils and sensitive exhaust gas after-treatment devices that can be poisoned by inappropriate oils.
• the driving environment – modern motorway driving and heavy stop-start traffic requires higher quality oils to prevent increased engine wear and tear.

You may prefer one of our application-based products, such as Shell Helix HX7 K, which is specifically designed for cars that have been driven more than 100,000 km.

To find the right oil for you quickly and easily, try our Shell LubeMatch tool.

We have put Shell’s years of know-how in oil development into every aspect of the Shell Helix formula – from the base-oil technology through to the additives’ selection and blending. We have also channelled the experience we have gained in supporting leading racing teams, such as Scuderia Ferrari, into the Shell Helix formula. It is designed to meet challenges, so no matter how stressful your driving conditions, Shell Helix will help to clean and protect your engine.

Adding an uncontrolled volume of additives to your oil is like putting salt on your dessert. It takes years of additive blending experience to come up with the right formula for Shell Helix oil, and the way the various additives are mixed in with the base oil is crucial to the oil’s overall performance. So our strong advice is “do not add additives” if you aim to get the most from your car. The addition of additives may lead to expiration of the vehicle manufacturer’s guarantee.