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Your alternative fuel rough guide
LPG Conversion & Autogas

What is Autogas/LPG?

LPG stands for Liquefied Petroleum Gas. It is a by-product of the refining process that turns crude oil into petrol.

How much is Autogas?

At the time this guide was produced, the typical pump price of LPG was 34.9 pence per litre but shop around ?locally we have gas available at 29.9 pence per litre!

Can all vehicles run on Autogas?

Subject to space limitations, most petrol-engined vehicles can be converted to run on Autogas at reasonable cost. The additional work necessary to convert diesel engines means it is not cost effective for cars or vans.

How do I get my car to run on Autogas?

By having it converted to bi-fuel operation by Redwood Autogas, LPGA Approved Installers. This is your guarantee of the highest quality conversion completed in accordance with the LP Gas Association's Code of Practice 11 regulating such work.

What are ‘Single-Point?and ‘Multi-Point? systems?

Single Point systems are the least expensive, and as the name implies introduce the fuel at a single point, normally a mixer attached to the throttle body. Multi Point systems offer the ultimate in autogas systems in terms of performance, economy and reliability, and the latest systems offer performance that is on par with the vehicle's existing petrol injection system.

Why do you install the FLASHLUBE system as part of the conversion?

Because LPG burns drier and hotter than petrol, and it is proven that in the long run this can cause “valve seat recession? The Flashlube system not only prevents this, it also increases economy and provides permanent upper-cylinder lubrication whether you are running on LPG or petrol.

Will Autogas affect the performance of my car?

The latest conversions make no appreciable difference to the car's performance. More noticeably with single-point systems, the top speed may be marginally reduced and the acceleration times cut by fractions of a second, but most drivers would be unlikely to detect any difference. For a given measure of fuel, the range of a car running on Autogas will be between 70 and 90 per cent of that of petrol according to the system fitted and the engine configuration.

What about my insurance?

Your insurance company must be informed of the modification to LPG, and you should ask them to revise the sum insured to reflect the investment made. Generally they do not charge any additional premium because our Certificate of Installation that the work is to the LPGA Code of Practice 11 is a guarantee of quality.

Why are Autogas cars sometimes referred to as bi-fuel?

Because converted cars have two tanks and two fuel-injection systems ?one for petrol and one for Autogas. The driver can switch from one to the other while the car is running, and the latest systems will automatically switch back to petrol should you run out of gas during your journey.

Where will the extra tank go?

Depending on the vehicle and your preference, either crossways behind the rear seats or in the well beneath the boot floor where the spare wheel normally fits. The spare wheel is then carried loose or replaced by a tyre sealant. Four-wheel drive vehicles often offer further options for multiple tanks mounted beneath the bodywork.

Is it safe?

Yes. Autogas is stored at about 7 bar in a pressurised tank that is significantly stronger than a conventional petrol tank. The Autogas tank will withstand enormous impact forces without deforming, and every aspect of the fuel moving around your vehicle is protected by specific safety valves.

Why is Autogas more environmentally friendly?

Because it appreciably reduces co2 emissions ?one of the so-called greenhouse gases which threaten long-term climate change. Overall emissions can be as much as 80 per cent cleaner using Autogas instead of petrol.

How long would it take to convert my car?

Installations vary enormously, so you will appreciate there is no standard answer. A typical family saloon car with a single boot-mounted tank should take two to three days, whilst a large 4x4 with multiple tanks may easily take a week.

How much does the conversion cost?

Many factors contribute to the final cost of conversion including tank options, number of cylinders, etc. A single point system for a modern, four cylinder fuel-injected car equipped with a catalytic converter would be in the region of ?,195 including all parts, installation, VAT and your free 500-mile safety check. Multi Point systems, additional tanks, custom installation work and additional components for specific vehicles may increase this cost, although the majority of vehicles can be converted within the ?95 to ?,400 plus VAT price range.

For a specific quotation for your vehicle, please click here . Tax Concessions for Business Users As an incentive to encourage the use of greener fuels, the Government is currently offering 100% tax relief on all conversion costs in the same financial year as they are incurred.

Any further questions? Please contact Redwood Autogas on (01384) 379733 or via email.