General Lee
Veteran Member
By the way, the Ford DEF tank is 8 gallons as I understand it, not 5.
The Pickups have a 5.1 gallon tank, the cab chassis trucks have a 6.2 gallon tank.
By the way, the Ford DEF tank is 8 gallons as I understand it, not 5.
Sure you do, buy a Cummins-powered RAM. :thumbsup:Don't really have a choice on the new pickups.
Sure you do, buy a Cummins-powered RAM.
Let me say up front I am a fan of International trucks, and they are the only one going mass egr, but I would not buy anything new without SCR/DEF. I don't want recycled dirty exhaust going back into my engines. SCR has been showing more fuel economy benefits than egr.
Let me say up front I am a fan of International trucks, and they are the only one going mass egr, but I would not buy anything new without SCR/DEF. I don't want recycled dirty exhaust going back into my engines. SCR has been showing more fuel economy benefits than egr.
But in an engine as small as in a tractor I don't think you would have to worry about all the downfalls of egr such as heat rejection and soot buildup and egr cooler failures. I am also impressed with Massey Ferguson as an example, in that they didn't put a price increase on their new scr equipped Sisu engines, whereas in the class 8 trucks I deal with, we have seen an almost 10 grand increase.
We've been using DEF all winter here with no freeze ups. Yes the heater elements can fail, but so can many of the sensors in an egr unit......so who is better?? At least with def we have almost eliminated stationary regens.
One brand (Terra) is supposed to have a def coming out that will not slush in the cold.
Also I have talked to many def manufacturers at the trucking trade shows I attend and they all admitted they are not any better than the next guy. They all said they make the same product, to a spec, and the only way they can compete is with packaging and pricing. So you can fell safe buying any of the brands. Was kinda odd to hear them not shoot their competitors down.
Two points here, to the best of my knowledge, EVERY DEF system ALSO has EGR. DEF does allow to manufacturer to run hotter, thereby reducing soot and (propotedly reduce fuel consumption) still achieve strict emissions limits on soot and NOx.
There are two "big" strategies to deal with NOx, EGR and SCR. Why have both?
When manufacturers claim to offer superior "fuel efficiency" with the SCR systems they conviently forget that you need to refill that SCR tank too. Typical SSCR use is almost 1:1 to the diesel saved, meaning that if you saved a gallon of diesel (and increased diesel efficiency) you also consumed about a gallon of DEF to accomplish that. With DEF being about the same or more per gallon than diesel, it's not a DOLLAR saving technology.
My opinion, diesels are fully electronic and now very complex, we don't need more tanks, sensors, injectors and pumps. It is WAY bad enough already!