Engine and Transmission

E10 – unless you drive diesel, or fully electric, you will be affected


  1. Posted on July 6th, 2021 by Rob Marshall
  2.     As you may have heard from the mainstream media, E10 petrol is due to hit UK forecourts in September. This will see up 10% ethanol added to regular 95 RON, instead of the present <5% content (E5).   In this introductory blog, GEM shall tackle some of the most common questions that our […]

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Cat-napper warning for hybrid owners


  1. Posted on July 2nd, 2021 by Rob Marshall
  2. Thieves are profiting handsomely from the high prices of precious metals, employed within catalytic converters to cleanse exhaust gases. As used catalytic converters can have a scrap value of hundreds of pounds, it is easy money for a thief, who can jack up your car, cut up the exhaust system and escape within minutes.   […]

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Call for stricter diesel emissions MOT Tests for illegally tampered diesels


  1. Posted on June 24th, 2021 by Rob Marshall
  2. The Westminster Commission for Road Air Quality (WCRAQ) is calling for the MOT to include a diesel particulate filter (DPF) efficiency test, in a bid to rid UK highways of cars that have had their anti-pollution systems tampered with illegally.   DPF trap carbon particulates, which are known carcinogens, hindering them from being expelled into […]

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Why your car needs a spring break – Part 4  


  1. Posted on April 9th, 2021 by Rob Marshall
  2. In our fourth instalment, looking at how cars suffer from infrequent use and what can be done at service time, Rob Marshall focuses on exhaust emissions that can hit your wallet hard, if they cause a post-lockdown MOT Test failure.   The topic of exhaust emissions is immensely complex. While you can read much on […]

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Why your car needs a spring break – Part 2


  1. Posted on March 24th, 2021 by Rob Marshall
  2. In the second part of investigating how cars suffer from infrequent use, Rob Marshall focuses on engine oil   It seems illogical that low-speed short trips are tougher on many parts of a car than longer commutes but this is especially true with engine oil.   Oil quality is essential to long engine life. Not […]

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Low on fuel? Don’t wait for the warning light – Part 2


  1. Posted on February 3rd, 2021 by Rob Marshall
  2. Following GEM’s earlier blog on the road safety issues associated with low fuel levels (https://blog.motoringassist.com/news/low-on-fuel-dont-wait-for-the-warning-light/), Rob Marshall examines some of the technical implications:   While running a low tank of fuel can make your car more economical, if anything, due to a reduction in weight, it could cost you in the longer term.   One […]

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Lock-down and Diesel Particular Filters (DPF)


  1. Posted on May 5th, 2020 by Rob Marshall
  2. One major problem with internal combustion engine cars is that they experience significant wear if used only for short journeys https://blog.motoringassist.com/car-maintenance/lock-down-should-you-start-your-engine/ This is one reason why buying a car on mileage alone is not a good idea, which explains a car wearing 50,000 miles could have an engine in better condition than one of the same […]

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Birmingham’s Clean Air Zone car-checker activated


  1. Posted on February 10th, 2020 by Rob Marshall
  2. Despite being postponed from last month’s original launch date, Birmingham’s Clean Air Zone is getting closer to its July introduction. A new online checker has just been introduced, so that motorists can confirm whether, or not, they will have to pay to enter the centre of the UK’s second city.   What is Birmingham’s Clean […]

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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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