Dual Fuel Engine
Dual Fuel or DF Engines are the kind of engines that can work on a mixture of gas fuel or diesel fuel or it could run on diesel fuel alone. Duel Fuel engines can not run on gas alone since they do not posses an ignition system, nor do they possess any spark plugs.

Since diesel is not a pure gas, and it is not a pure diesel designed engine, it has some disadvantages in the department of fuel efficiency, as well as Methane slippage.. For example, the fuel efficiency may be 5% to 8% less than in a comparable spark-ignited, lean burn engine at 100 percent load. It could even be greater on lower loads.

Lift Truck Fuel Sources and Classifications
There are certain applications that have proved difficult for the forklift. Like for example, scrap metal is amongst these problems. To be able to successfully handle things like this requires using the right type of equipment for the job.

There are 7 major lift truck classes, including power sources like hydrogen fuel cell, liquid propane gas, gasoline, diesel and electric. The power source is linked to several of these particular classes. The main power sources for forklifts consist of Battery, Diesel, Gasoline, Propane and Fuel Cell.

The most popular overall are electric powered trucks, mostly in Class III, II and class I forklifts. In Classes IV and V, internal combustion trucks are more popular. The most popular electric power source is the lead-acid battery. Amongst internal combustion trucks, roughly over 90 percent are fueled by propane.

The most popular power source for lift trucks is battery. Battery powered models make up around 60% of the new forklifts sold in the USA. Their benefits comprise: less maintenance requirements, quiet operation, the ability to be utilized outside and indoors with no harmful emissions.