Engine and Transmission

Save money with DSG gearbox repairs


  1. Posted on December 30th, 2019 by Rob Marshall
  2. With there being no obvious difference within the car, especially as the gear-lever tends to have the same ‘P’, ‘R’, ‘N’ and ‘D’ positions, many drivers are not aware whether their car is fitted with an ‘automatic’, or an ‘automated-manual’ gearbox.   Twin-clutch gearboxes fit in the ‘automated-manual’ category, because they consist of two manual […]

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Bad roads and corrosion ‘fuel’ sump replacements


  1. Posted on December 12th, 2019 by GEM Motoring Assist
  2. Regular readers of GEM blogs will know that poor road surfaces are not only bad for safety but also for your car. While tyres, steering and suspension components are the most obvious casualties, the humble engine lubrication sump is also suffering.   The sump’s main purpose is to retain the oil that protects the engine […]

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The behind the scenes damage that floods wreak upon your car


  1. Posted on November 27th, 2019 by Rob Marshall
  2. While many of us escaped the recent floods, some parts of the UK experienced torrential downpours and it is certain that most of us will be confronted by flooded roads at some point between now and next spring.   While there are many sound safety reasons for not entering deep water, such as the danger […]

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Spark plug upgrades


  1. Posted on August 16th, 2019 by Rob Marshall
  2. You can spend hundreds of pounds on aftermarket bolt-on products that claim to improve your fuel consumption – some work, others are simply gimmicks. Even so, fitting quality replacement parts can have a greater relevance. The spark plug has a very hard life. It must contain forces that equate to fifty times that of gravity, […]

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Save money and check oil before going on holiday


  1. Posted on August 6th, 2019 by Rob Marshall
  2. Contrary to popular belief, all engines consume oil, even when in good condition; the rate at which they do so varies, however. The result is that the oil level drops within the sump. Yet, providing that it does not fall below the ‘minimum’ mark on the dipstick, engine damage is unlikely to occur. Not every […]

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The perils of cheap ignition coils


  1. Posted on August 5th, 2019 by Rob Marshall
  2. Ignition coils have been crucial to the petrol engine, even before one was used to power a horseless carriage and are still vital today. Their role is to provide a high voltage spark that is used to jump across a gap on a spark plug, to ignite the petrol and air mixture. Without a decent […]

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What is my timing belt interval?


  1. Posted on May 15th, 2019 by Rob Marshall
  2. This is one of the most popular technical questions that our members ask. The answer is both mileage and time dependent. Here are our top five tips on timing belt intervals: 1. Over-egging Some car manufacturers state an over-long replacement interval, mainly to appease fleet customers, when the cars are new. Premature timing belt failures […]

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Be wary of DPF additive overdosing


  1. Posted on May 2nd, 2019 by Rob Marshall
  2. We have heard recently of problems occurring, when drivers dose additives into their diesel cars to help clear a partially-blocked diesel particulate filter (DPF), as pictured. Subsequent problems occur not due to the additive itself but because the operator does not follow the instructions.   DPF additive problems The additives work by promoting higher temperatures […]

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Is your antifreeze eating your engine?


  1. Posted on March 12th, 2019 by Rob Marshall
  2. As we start to look forward to spring, you may think that antifreeze does not matter any more. Indeed, the coolant within your engine has many properties. Yes, it cools the engine but it also possesses an anti-corrosion property. These additives diminish gradually over time, until either corrosion, or decomposing coolant, causes a blockage and […]

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The dangers of ‘silent’ electric cars revealed with a solution


  1. Posted on November 23rd, 2018 by Rob Marshall
  2. Despite many questions remaining unanswered about the cradle-to-grave environmental soundness of the electric vehicle (EV), it does offer a means of cutting urban pollutant levels that result from conventional road transport. In many ways, I remain a cautious fan. With population levels in our cities predicted to swell even further, it is unsurprising that governments […]

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