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Diesel Engine FAQs

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Diesel engines have the highest thermal efficiency of all internal combustion engines which means they tend to be more efficient than petrol engines.

Efficiency aside, there are other factors that make diesel engines different to petrol engines;

How often should a diesel engine be serviced?

Because diesel engines suffer from carbon build up which can cause damage to the engine – it’s important to stick to a regular service schedule, so any problems can be identified early. Neglecting to do so can lead to very expensive repairs.

Does my diesel have a spark plug?

Diesel vehicles have a different type of plug called a Glow Plug….What’s a glow plug?

In a diesel engine a glow plug heats the cold fuel ready to be ignited under pressure, diesel engines don’t use a spark to ignite like petrol engines.

Read more about Glow Plugs and the Diesel Ignition system here

What oil should I use in my diesel – do I need special diesel oil?

Yes. Oils that are created for use in diesel engines are different to oils for petrol engines, they have extra additives to help clean the engine and more.

Read More about Diesel Oils and Additives here

Why does my Diesel engine use more oil?

You might have a worn or damaged turbo charger shaft seal, which could lead to bigger problems.

Find out more about why your Diesel Engine may be using more oil

Considering Buying A Diesel Car?

While certain models can be initially more expensive than a petrol vehicle and cost slightly more for quality servicing, in the long-term, diesel vehicles usually use up to 30% less fuel and have a longer engine life as well as lower CO2 emissions and greater towing abilities.

Looking for a Diesel Service? Click Here

 

Differences in Diesel Engine and other engines

One of the important choices when choosing a vehicle is what type of engine you want; petrol, gas (LPG) or diesel. Each has their pros and cons and each have different requirements for servicing and repairs.

At Kiwi French Automotive, located in Slacks Creek, diesel engine repairs are our bread and butter. Call or email for a quote or book a service online.

 

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Book a Diesel Service Online Here

Diesel engines and petrol engines have a distinct set of differences, including:

  • Type of fuel (obviously)
  • Longevity - diesel engines are built to withstand higher compression of the fuel so they generally last longer than petrol engines
  • Efficiency - diesel engines are 25-30% more efficient than petrol because they convert heat into energy while most of the heat produced in a petrol engine goes out the exhaust pipe
  • Torque - diesel engines produce more torque which makes them good for towing
  • Fuel filter - while it's important to have clean fuel in your petrol engine, dirty fuel will only cause the car to run less efficiently. In a diesel engine, dirty fuel can severely damage the engine so it's important to get the filter checked regularly
  • Spark plugs and distributors - these are an important part of your petrol engines but guess what, diesel engines don't have them so they don't need servicing. Diesel engines achieve combustion by compression alone, without the need for a spark
  • Performance - diesel powered vehicles can be thought of as the workhorse while petrol powered engines are more like a racehorse, however, diesel engines are actually able to achieve better acceleration, it's just that the other properties lead to them usually being fitted to heavier vehicles which make acceleration slower

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