Jump to content
The Motorists Guide
  • GUIDES TO MOTORING ABROAD

    601453474_GBFlagcopy2.jpg.acaed72a60dd15289a7f77c1a4bfacd7.jpg   582983291_USAcopy.jpg.28a336ce779814a1456fdf03662bdb31.jpg   560432495_Europecopy2.png.ea8711e12b83774ebffc1576326516d0.png   459823598_RoadTripimage.jpg.42f3c1905e49cf42b17e8f53c5774a81.jpg

  • JOIN THE 'OLD SCHOOL COOL' CAR CLUB - FOR ALL MODERN CLASSIC CAR OWNERS

    1866879865_OSCClub.png.2645f7882ec311dd7a6f61e9dcd4a6ba.png

  • What’s the best oil for my car?

       (Overall rating from this review)
    choosing the correct oil for your engine....you need to get it right!
    The Motorists Guide

    Please be aware that these comments were copied here from another source and that the date and time shown for each comment may not be accurate.

    Message added by The Motorists Guide

    Sign in to follow this  

    Engine oil

    Different cars require different types of oil

    Choosing the best oil for your car's engine can be tough, given the large number of options available. Our guide can help you make the right choice

    Oil is one of those mysterious substances for many car owners.

    Unless you’re an enthusiast, you may well open your car’s bonnet only when something goes wrong – you’ve run out of washer fluid or there’s an alarming amount of smoke coming from somewhere. But keeping the car well lubricated is one of the most important maintenance jobs, because unwanted friction in a fast-moving engine usually leads to bad, potentially expensive news.

    Advanced mechanical technology in modern cars means that modern oils are more complex than ever, according to David Wright, director general of the United Kingdom Lubricants Association.

    He says increased regulations on vehicle emissions and increasing demands from consumers for performance uncompromised by advanced fuel economy have meant that the lubricant industry of oil blenders and marketers has had to keep up with manufacturer demands as they chase better efficiency.

    “Smaller oil sumps mean we are all using less oil each year but the oil we are using has to work twice as hard,” Wright says. “Car manufacturers today are demanding thinner and lighter engine oil viscosities to achieve enhanced fuel consumption in a smaller, more powerful engine while at the same time reducing emissions.”

    mar08-custardoil-w.jpg

    This means that getting the right oil for your car is more important than ever. Get it wrong and while you won’t see instant disaster as you would if you’d put diesel in a petrol car, you will subject your engine to excess component wear.

    “You won’t see an issue immediately. It’s not like putting contaminated fuel into your vehicle,” says Wright. “But within 20,000 miles, you could have severe operational issues.”

    What kind of oil you need depends on the engine. All new cars will come with a recommended grade listed in the manual and usually a recommended manufacturer, too. The grade will be shown in numbers, separated by the letter ‘w’ – for example, 5w40.

    “Put simply, the viscosity of an oil gives you an indication of its resistance to flow at given temperatures,” Wright explains. “The ‘w’ rating, preceded by a number, gives you an indication of how the oil flows at winter temperatures and the last number indicates flow in summer temperatures.”

    However, the viscosity alone isn’t enough to indicate how well an oil will protect your engine. There are numerous tests that car manufacturers go through to formulate engine oils and these are ratified by an organisation called the European Automobile Manufacturers Association, known as the ACEA (an acronym of the organisation’s French title). The ACEA determines the exact requirements needed to meet the demands of different types of modern engine. The specifications, known as ACEA Oil Sequences, are renewed every four years but are backwards compatible for older vehicles. 

    “The high costs of investment in engine oil technology run into six or even seven figures for a set of engine tests. Oil blenders, manufacturers and marketers have to be certain that the lubricants they sell are suitable for a given application,” Wright says.

    Each ACEA specification is denoted by a letter, followed by a number, which identifies the class of oil and a category within that class – for example, ACEA C3. This specification will be indicated on the oil packaging and the car manufacturer's manual will again specify which you should go for.

    But what if you can’t find the exact recommended oil? Wright says drivers should tread carefully, because using the wrong oil can cause damage to your car’s engine.

    oil.jpg

    The problem is that the oil industry is self-certifying. The ACEA defines the specifications, but it’s up to the manufacturers to make sure that the products they put out meet them. A technical organisation called ATIAL spot-checks products of its members every few years, but largely it’s down to the industry to self-police. Some lesser known oil suppliers have been known to label their products as a certain specification but not meet the standards.

    “Sometimes it distorts the marketplace if you get some less reputable new entrants into a market selling product below the cost price of other, more reputable blenders. That’s when you get some questions raised.

    “If something looks too good to be true, then it probably is,” Wright says. “If you have been offered the latest specification, fully synthetic engine oil in the pub for £1 a litre, then it probably is too good to be true.”

    Read more: Why engine downsizing doesn't always work

    To combat such products and to check the quality of products, the UKLA launched the Verification of Lubricant Specifications (VLS) service. Anyone can suggest a product for it to test, and if it’s found to be wanting, the UKLA will ask the marketer to quarantine or recall the product, and relabel or reformulate it. Wright says that since the VLS was launched in 2013, it has made a positive impact on the quality of lubricants sold in Britain.

    “I think we’re almost there,” he says. “Some of the newer companies are marketing strange formulation that need investigating but, on the whole, the UK market is quite compliant.”

    Conversely, some manufacturers produce oils that go beyond the required specifications.

    “Some manufacturers will blend to the base line and some will look to exceed it, to develop some form of quality positioning around their brand,” Wright explains. “It’s usually the multinationals, the big companies that will make them even better than the specifications. So if an oil specification says it’ll last for 15,000 miles, they’ll make it so it lasts 20,000 miles, for example. They’ll put a richer mix of additives into the formula to make sure that not only does it not produce wear in an engine, but it’ll help protect the engine over time, too.”

    Quick questions

    How does oil vary?

    Oil comes in different viscosities, signified by a grade number, such as 5w40. It’s also blended for different types of engines, signified by an ACEA specification, such as ACEA A1/B1.

    What oil suits what car?

    The type of oil recommended by the car manufacturer will be listed in the manual. It may recommend a particular brand, but the grade and ACEA specification are the important things to look for.

    Does brand matter?

    As long as the grade and ACEA specification is correct, you should be fine. However, David Wright of the United Kingdom Lubricant Association recommends choosing reputable manufacturers. Some firms will blend more advanced, expensive oils that exceed the specifications on the packaging.

    What about cheaper brands?

    Again, as long as the grade and ACEA specifications are correct, then everything should be okay. But oils from some newer, less reputable brands on the market have been found not to meet the claimed specifications. The UKLA’s VLS service investigates complaints and tests products to see if they’re compliant and has an archive of its findings on its website - http://www.ukla-vls.org.uk.

    What happens if you use the wrong oil?

    Using the wrong oil will put undue stress on the mechanical components of your engine. Badly lubricated parts will wear faster and so decrease the life of the engine.

    How often should you check your oil?

    There’s no set rule. Those who drive more should check more often. David Wright suggests everyone should check their vehicle's oil levels at least once a month.

    feb08-hd-book2-w.jpg

    How often should you change the oil in your car?

    This will vary from car to car and will be mentioned in the car’s manual.

    Glossary of terms

    ACEA - European Automobile Manufacturers Association. An organisation that represents European vehicle makers and determines the requirements for modern lubricants. Specifications for different types of oil are denoted by an ACEA figure on packaging, such as ACEA A1/B1.

    ATIEL – Industry association of European lubricant manufacturers and marketers. The acronym comes from the French “Association Technique de l'Industrie Européenne des Lubrifiants”

    Grade – the viscosity of your engine oil, signified by two numbers that indicate oil flow in winter and summer temperatures (eg 5w40). The lower the numbers, the thinner the viscosity.

    SAE - Society of Automotive Engineers. The US-based body that defines how oil viscosities are defined and regulated.

    UKLA – United Kingdom Lubricants Association. Body representing businesses in the British lubricant industry.

    VLS – Verification of Lubricant Specifications. A non-profit service launched by the UKLA to investigate complaints of non-compliance with lubricant specifications.

    View the full article

    GOOD POINTS:
    • plenty of help available to find the correct oil
    BAD POINTS:
    • so many different grades/specifications, could be simplified
    Sign in to follow this  


    User Feedback

    Create an account or sign in to leave a review

    You need to be a member in order to leave a review

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now

    There are no reviews to display.


  • Our picks

    • Winter Motoring - is your car ready for the freeze?
      It’s not as though our Winters are getting colder or that we are experiencing longer spells of the Winter freeze, but when it does go below zero then we can reasonably expect to encounter a range of problems that may not have been there beforehand.

      Below is a list of items worth getting checked before the Winter freeze catches you out
      • 0 replies
    • Mercedes W212 E Class saloon facelift
      The Mercedes W212 E Class was originally launched in 2009 to replace the well-built W211 version, which itself had helped recover Mercedes reputation at building reliable, long lasting cars after the quality control issues of the late 1990s/early 2000s. There was no doubt that both the car and Mercedes engineers had big shoes to fill but thankfully the gamble paid off as the new model was able to build on the good reputation of its forbearer. The W212 was not only bigger than the previous model it was also more refined.
      • 0 replies
    • Road trip through Nevada & Arizona
      Las Vegas – a city synonymous for gambling, partying and generally a play ground for the rich and famous. However, what if you want a change from the hustle and bustle of the city and see more of what the silver state has to offer? The answer is to hire a car and I have devised a perfect road trip which allows you enjoy some of the amazing scenery, ghost towns, mining towns and route 66 which all helped make the states of Nevada and Arizona both famous and rich. Below is a picture of the planned route.
      • 0 replies
    • 2018 Ford Mustang Convertible
      The ford mustang – an American icon but does the 2018 model make a viable purchase? Steve went to Las Vegas to find out.
      I start this car review in an unusual fashion, as I have a confession to make. When I landed at the Las Vegas McCarran airport I was expecting to be driving away in the 5.0 V8 version of the Mustang, however, due to a mix up I, in fact, ended up with a turbocharged four-cylinder 2.3 Ecoboost version with the automatic gearbox. However, I must stress that the Ecoboost engine isn’t lacking in performance as it produced 313bhp and 319 of torque. Unperturbed I felt this to be more fitting to our UK readers where the Ecoboost engine makes more financial sense, both in purchase cost and running cost.
      • 1 reply
    • Essentials everyone needs to keep in their vehicle
      Whether it’s winter or summer, there are some key items you’ll need in your vehicle all year around to help you stay safe on the road. Richard Gladman, IAM RoadSmart’s head of driving and riding standards, provides the eight essentials that you should always keep in your vehicle
      • 0 replies
×