Technical Queries

Why your car needs a spring break – Part 5


  1. Posted on April 21st, 2021 by Rob Marshall
  2. While recent GEM technical blogs have looked at why the 12-volt battery, engine oil, exhaust and emission controls can be affected by cold weather, infrequent use, and/or multiple short journeys, they are not alone. Therefore, the final part of our post-lockdown checks include components that are worth either inspecting from home, or having a garage […]

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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 3


  1. Posted on April 1st, 2021 by Rob Marshall
  2. In the third part of looking at how cars suffer from infrequent use, Rob Marshall focuses on the exhaust system   While exhaust systems are out-of-sight, they should not be out of mind. Their main enemy is corrosion. With last winter being somewhat colder than usual, much of the country saw plenty of road salt […]

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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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Winter lockdown and your car – Part 2


  1. Posted on January 12th, 2021 by Rob Marshall
  2.   We continue our advice, looking at technical issues that winter brings, when using your car infrequently.   1 Starting vs driving We do not recommend starting an engine and letting it idle on your drive, or in a garage. While the exercise is unlikely to charge your battery sufficiently, it also introduces moisture into […]

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Winter lockdown and your car – Part 1


  1. Posted on January 7th, 2021 by Rob Marshall
  2. While we are now familiar with national lockdowns, either using a car occasionally, or not at all, during winter poses greater risks of breakdown and damage than in the warmer months. As such, our technical adviser has put together a few extra helpful hints to save you money and inconvenience but insists that they supplement […]

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Don’t let your DPF get too cool this Christmas.


  1. Posted on December 23rd, 2020 by Rob Marshall
  2. While diesel cars have attracted much negative press recently, many owners strive to keep existing cars in good condition. However, in bids to make diesels less polluting, modern versions possess diesel particulate filters (DPFs). Pictured with this blog is a cutaway example.   The DPF is a canister, fitted to the exhaust system, which traps […]

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Winter tyres, or all-season?


  1. Posted on November 25th, 2020 by Rob Marshall
  2. A stereotype of the British is that we are weather-obsessed. Perhaps this is true but, in the main, our weather is not as extreme as that of other nations. This is reflected in our tyre buying habits. Over 90% of UK tyre sales are of the ‘summer’ variety, for example. Additionally, unlike certain countries in […]

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How to check your air conditioning


  1. Posted on June 30th, 2020 by Rob Marshall
  2. Due to its dehumidifying benefits of clearing misted windows efficiently, GEM recommends the all-year-round use of air conditioning. Yet, using the ‘air-con’ regularly also has a technical benefit, a primary reason of which is that the refrigerant is less prone to escaping. If it does so, the system stops working.   We do not recommend […]

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