Depends on the truck. Most range from 2000.00 to 4500.00. Hdfilters.com is a good place to start
Yes, ESPECIALLY in a newer truck designed to run on Ultra Low Sulphur Diesel, and especially if it had a Diesel Particulate Filter.
No. They have other exhaust regulation devices, such as the EGR (exhaust gas regulator), DPF (diesel particulate filter), and DEF (diesel exhaust fluid).
yes new ones 2011-2014 has a DPF Diesel Particulate Filter and a Catalytical converter
Around $12,000. You can't say $12,000 without asking further questions. What type of engine is it for, what type of use is it, personal car, truck or heavy class 8 truck. The best answer is that it can range from $2000 to $20,000 or more depending on application.
They don't sell that anymore. There is Low Sulfur Diesel (less than 500ppm Sulfur) and Ultra Low Sulfur Diesel (less than 15ppm Sulfur). If your vehicle says "ultra low sulfur diesel required" you have a diesel particulate filter. (You might also have a Selective Catalytic Reduction reactor or an Advanced EGR system if you have a 2010-on truck, but if so you also have a DPF.) You can run LSD in your engine occasionally--like if you need some fuel because you're about out of gas and there's nothing else around--but running LSD all the time in a newer truck will ruin the diesel particulate filter and they are not cheap.
It was only about 10mpg city and 14mpg highway. That was because of the diesel particulate filter (DPF). The truck emitted lower emissions, but got terrible gas mileage. If you get a DPF delete pipe, you can achieve 20mpg highway and 15mpg city.
For a high mileage Class 8 truck, 250,000 miles is the typical recommendation. Vocational trucks, it'll be considerably less. In reality, you'd want to at least consider it whenever the DPF differential pressure gets above 2.5, and definitely whenever it goes above 3.0.
Fill up the fuel filter with diesel fuel before you try starting it.
The fuel filter canister is on the driver side of the engine block.
Drain the tank, change the fuel filter, refill with diesel.
A fuel filter
It is on the driver side of the engine block.