Tar Oils as Motor Fuel
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ASCHEME designed to promote the use, as fuels for commercial-motor vehicles, of certain coal-tar oils, such as creosote and similar products, but excluding light Oils such as motor spirit and.benzole and Diesel-oil fuels, which are already in general use, has been -announced by the Secretary for Petroleum in agreement with the Mines Department and the Ministry of Transport. This will come into operation on January 24 and will be subject to review after six months. It is intended -to foster experimental work and further the use of such oils, whilst effecting a saving in the consumption of imported fuels.
Users of such oils will be granted additional ration coupons for their vehicles on a scale which will enable them to cover extra mileage in the cases of those units in which The tar oils are used, unless the vehicles be already working to capacity on essential journeys. Intending users, at the time they make applications for ration coupons, will be required to declare that they will be -using coal-tar oils. In the case of goods vehicles additions will be made to the basic rations and to any supplementary rations granted, subject to the approval of the Regional Transport Commissioners.
For public-service vehicles the Commissioners will allow, at their discretion,. such increased mileage on authorized services above the standard hitherto deemed essential, as may be considered desirable to serve the transport needs covered by the operator.,
It should be noted that coal-tar oils used as motor fuel can be sold or acquired only on the surrender of valid coupons, except under the authority of a licence issued by the Secretary for Petroleum. In general, it is proposed that only producers of such oils should receive licences authorizing them to use these in vehicles registered in their own names.
The original basic ration will be increased by the ratio which the coaltar oil bears to the whole mixture. The ration will be apportioned between the imported fuel and the coal-tar oil, according to the nature of the mixture to be used.
In cases where a dual carburetter is used, half of the ordinary basic ration of petrol will be allowed, together with coupons for coal-tar oil sufficient to provide up to 100 per cent, more units
In the former case the following examples show how the formula operates. Declared mixture: 75 per cent. imported, 25 per cent. creosote. Basic ration in units: old basic, 60 imported; new basic, 75 (addition of 25 per cent.); apportioned to nearest unit on basis of 75:25. This will mean 56 imported and 19 creosote, and represent a saving of four units in imported fuel. For the vehicle with a dual carburetter, an example is:—Basic ration in units—old, 80 imported; new, 30 imported, 90 creosote, representing a saving of 30 units in imported fuel.