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Volvo VNL - driving it is a gas!
The most important and positive change for most users is the increase in power and torque, and the result is that the vehicle can cope with increased loads (e.g. during climbing hills) at higher gears (comparing to running on diesel only), without the need to reduce gear.
The use of LP gas system results in lower emissions of particulate matter in the exhaust gasses, which in theory should result in increased engine oil life.
We asked Piotr Łączek – the owner of Tiptrans, who uses the American market-based Volvo VNL truck-tractor on a daily basis – about his opinion on the vehicle and its fuel system. The vehicle works with a semitrailer tipper and is used to transport aggregate.
gazeo.pl: What was the fuel consumption before the dual fuel system was installed?
Piotr Łączek, Tiptrans owner: The lowest consumption rate I managed to get was 33 l/100 km, but more dynamic driving resulted in an increase in fuel consumption up to 35-38 l/100 km. With my style of driving, this level of consumption should be considered the most realistic.
Were you driving with a load?
The specific nature of the truck’s use means half of the route is made with a load (40 tons), and during the way back it’s unloaded (around 12 tons). It should be noted that it is a 6x4 tractor and the trailer has two solid axles with dual wheels, so even driving unloaded won’t save you much.
And what about fuel consumption after having the LPG conversion done?
The vehicle consumes around 26-28 liters of diesel oil and 11-12 liters of LPG. This is an obvious saving. In addition, the car is much more powerful, which is pretty important for the job it is used for.
The use of LPG in the Volvo VNL has reduced operating costs concerning fuel from about 210 PLN (40 euros) spent on diesel to about 185 PLN (35 euros) spent on LPG/diesel blend per 100 km. It saves up to 5 euro, which – considering the vehicle’s yearly mileage of around 80-100 thousand kilometers – allows the owner to save about 25 thousand PLN (almost 5000 euros), which is practically an equivalent of a small car.
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