it more than floats my boat...it powers it.
dont forget sir, that you lot of scallywags are just following the bandwaggon, as the diesel engine was invented long before the petrol one.....so there
heres a bit of copied bumph for you also.
Why is a diesel engine more fuel efficient than a petrol one?
A diesel engine compresses at a far higher ratio than a petrol engine. A petrol engine compresses at a ratio of 8:1 to 12:1, while a diesel engine compresses at a ratio of 14:1 to 25:1. This makes the diesel engine far more efficient. Diesel fuel also contains a higher energy density than petrol. On average, 1 gallon of diesel fuel has 147,000 BTU while 1 gallon of petrol has 125,000 BTU.
Diesel engines also have a higher thermal efficiency than petrol engines. This is the ratio of chemical energy converted into mechanical force. In all engines some of the chemical energy in the fuel will be wasted through heat (which is then released through the vehicles cooling system). Diesel engines waste less energy than their petrol counterparts.
What are the advantages of diesel engines over petrol engines?
Economy: This is normally the first thing people associate with diesel engines. Higher compression ratios, higher BTU per gallon and higher thermal efficiency all add to making the diesel engine more economical than a petrol engine.
Lower maintenance & Reliability: Because diesel engines do not use electricity to ignite the fuel, they do not need the complex ignition systems (spark plugs, coils, HT leads, distributor etc) associated with petrol engines. Petrol engines also require a carburettor or injection system to mix the fuel and air, diesel engines do not need them. This all means there is far less to go wrong with a diesel engine.
Longer life: Diesel engines, because of their application in industry, are normally built far stronger than petrol engines. From farming to Taxis, they are expected to work harder in a shorter period of time. Normal wear of piston rings in petrol engines is far slower in a diesel engine as the nature of the diesel fuel itself acts as a lubricant. You will also hear of diesel being referred to as ‘heavy oil’ and diesel vehicles as ‘oil burners’.
Emissions: Diesel engines in comparison to petrol engines produce less carbon dioxide, the gas responsible for global warming, and less Nitric Oxide (NO).
now go boil your heads.