Frequently Asked Questions (FAQ)

Q - What are carbon engine deposits?

A - Carbon Deposits are a by-product of combustion. These deposits attach themselves to many parts of the engine. Often these parts are critically important to the performance and economy of the engine, e.g. Fuel Injectors, Piston Rings and various sensors.

If fuel injectors are dirty this will interfere with the efficiency and effectiveness of the fuel spray pattern. Deposits behind piston rings will restrict the ability of the rings to seal and therefore can cause a loss of compression. BG Products’ research and development has developed the most effective treatments to safely remove these deposits.

Q - What is decarbonisation and/or engine detox?

A - Decarbonisation (or sometimes metaphorically referred to as an engine clean/detox) usually refers to the process of removing deposits. BG Products do this by spraying chemistry, under controlled conditions, into the engine. This safely removes deposits and restores power and economy.

Q - Why do carbon deposits affect performance and MPG?

A - Deposits attach themselves to any part of the engine they come in contact with. This can include injectors, sensors and piston rings. BG removes deposits from those critical areas to restore MPG and power.

Q - Doesn’t normal servicing provide all I need to maintain my vehicle?

A - Normal servicing does not clean the inside of an engine although many garages do recommend using BG44K, BG EPR and BG 245 as a standard item to clean inside an engine every service.

Q - How long does a BG Service take?

A - A BG service can take anything from 15 minutes to 45 minutes

Q - Will I definitely notice the difference?

A - BG Products fuel system cleaners and engine flushes cannot clean a clean engine. That said, as most engines are dirty within a few thousand miles, then BG Products will get results in nearly all cases.

Q - Is it only for problem vehicles?

A - In a word ‘No’. BG Products preventative maintenance, using fuel system cleaners and engine flushes will stop the vehicle becoming a problem car. However, it should be noted that way before a car becomes a problem car it is already losing performance and economy without the driver noticing. Using BG Products such as BG245, BG 44K and BG EPR will restore and maintain performance if used annually.

Q - Is it only for older cars?

A - Deposits will form in only a few thousand miles. BG have seen loss of compression and injector efficiency in under 7,000 miles on some occasions. Regular use of BG Products will stop that decline.

Q - Does it only work on certain cars?

A - BG Products engine decarbonisation and Engine flushing is effective on all internal combustion engines.

Q - Is it expensive?

A - To compare costs, please see the following example: A motorist drives 10,000 miles per year, at average of 35mpg. This is 285 gallons of fuel or 1,300 litres.  At a cost of £1.49 per litre it is £1,937 spend.   If that motorist decides to use a premium fuel @ £1.55, it would be £2,015, or £78 more. An annual treatment (10,000 miles) of BG fuel system cleaner for less than 1/3rd of that price, will save a minimum of £50 in fuel spend! So to answer the question, No - drivers can save money by using BG Products!

Q - Does it affect warranties?

A - EU law has a regulation called Block exemption. This states that the car owner can have their car serviced at ANY Vat registered establishment, where original spec, approved parts are used, and it cannot affect the warranty.  Therefore, using BG products, (the same as any dealer using any competitors’ product) cannot invalidate a warranty unless the product is proven to have caused damage or an issue. Please see as below regarding millions of units sold.

Q - Is it recommended by car manufacturers? 

A - Yes, by many worldwide, but not as a specific instruction. BG work with almost all engine manufacturers worldwide under Non-Disclosure Agreements, to resolve the issues they face. These are often known to the dealers, but understandably, not to the public!

A document called the Worldwide Fuel Charter, a document produced by all the engine manufacturers, identifies the need to keep injectors clean. It further references the importance of PEA Polyether Amine as the effective chemistry for dealing with hard-baked combustion chamber deposits. BG Products fuel system cleaners contain the highest levels and grades of PEA

Q - The main dealer told me not to use chemicals - Are they wrong?

A - They are. Because they are usually unaware of the Worldwide Fuel Charter stating the importance of keeping the engine and injectors clean. You own the car and you can choose how best to look after it. Manufacturers don’t like to publicly approve a third party product. This will affect sales of their own cars if it is interpreted as their cars need assistance. They are correct in saying that if adding a product caused a problem, you may have a warranty issue, but BG Products have been selling their products for 50+ years in over 70 countries and BG do not cause problems.

Q - Is using deposit cleaning chemicals risky?

A - Not at all. BG sell millions of units of products worldwide every year. If there were any problems being caused or issues arising from use, it would be well-publicised over the internet. Please do your own research. You will find 1,000’s of satisfied independent users.

Q - Do you use harsh chemicals?

A - There is no such thing as a friendly, no harsh cleaning chemical! I would bet everyone reading this has a very caustic chemical within reach, e.g. Bleach or Oven Cleaner.  BG’s chemistry is designed to clean safely, efficiently and effectively. We have some products that are professional use only but most can be used safely by the public without any concern. 

Q - Are deposits caused by cheaper fuels? Can I rely on premium fuels to clean deposits?

A - Deposits are caused by the combustion of a hydrocarbon fuel, diesel or petrol. To confirm, all fuel sold in the UK meets or exceeds the requirements mandated by law. The difference between the fuels is in simple terms, the quality and concentration of additive packages added by the fuel companies. More expensive fuel usually has more additive packages, and should have a benefit to the engine. Even the best fuels, as advertised by the fuel manufacturers, do not have the patented proprietary and proven cleaning power of BG.

Purchasing more expensive fuel should be better, but the cost is higher, usually 6p or so more.  For example: Motorist drives 10,000 miles per year, at average of 35mpg. This is 285 gallons of fuel or 1,300 litres.  At a cost of £1.49 per litre it is £1,937 spend.   If that motorist decides to use a premium fuel @ £1.55, it would be £2,015, or £78 more. An annual treatment (10,000 miles) of BG fuel system cleaner for less than 1/3rd of that price, will save a minimum of £50 in fuel spend!