Petrol cars rev higher so they are usually faster, but diesel cars have more torque so can pull heavy weights better. Top speed is better in a petrol, but because diesel cars have turbo charges, some are just as fast.
diesel is more efficient
It's a more efficient fuel.
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Diesel engines are more efficient and do use less fuel, but they do not cost less than a petrol engine, they cost more. Diesel fuel also costs more. A diesel engine will however last longer.
diesel
The diesel battery is bigger as it take a lot more to get a diesel engine going. Best bet is to charge the diesel battery using the petrol, connect the 2 and leave the petrol engine running.
502 big block
it depends how old the car is. It's quite a lot but not unusual especially on a diesel car as these tend to be owned by people who do high mileage (20,000 miles a year or more probably).
It should be diesel fuel in a diesel car - in the US and Europe, that will be #2 Ultra Low Sulphur Diesel.
The first car was on diesel.
Diesel is used in powerful jobs such as towing. When more power is needed, diesel performs just as regular gasoline does, but has a bigger payload. An average car can only pull so many pounds, but with diesel in the car instead of premium gas, it can pull more. Diesel is also used in the trucking business, where heavy loads are put onto big rigs, and diesel is the only reliable source of gasoline available for the tough job.
In small amounts diesel will not affect operation, but eventually as the mixture becomes more diesel than gas it will not burn in a gasoline car, and will damage a diesel vehicle. If you have mixed more than 5% diesel with your gas you should probably drain and start over to avoid damage.