When did DEF become required ?
Thinking of upgrading to a DP. I want to avoid having to deal with DEF. What year models did it become a requirement ?
Forum Discussion
When I started to drive semi in 1995 I would get 6.5 mpg on average with a cab over truck. When Kenworth introduced the T600 they got around 8 mpg and everyone thought that was great. A classic Peterbilt 379 or Kenworth W900 would average 4-5 mpg.
Since then the EPA has messed up the diesel engine and after aerodynamics and now ULSD we are back to fleet average of 6.5 mpg and diesel costs $4 a gallon not $1 a gallon.
Volvo claims a savings of around $3000 a year due to an 8% increase in fuel economy. I've not seen it and we use more DEF than the engineers claimed we would. I think it's a net zero situation. We still have a couple of pre EPA engine trucks left in our fleet 750,000 plus miles and the engines run better than most of the new ones. Less head aches but the new ones sure ride better.
The DEF regen units adds over $5,000 to the initial cost of the truck not to mention the repair bills.
Other than LA being able to breath I'm not sure it is worth the cost for the rest of the country.
Since then the EPA has messed up the diesel engine and after aerodynamics and now ULSD we are back to fleet average of 6.5 mpg and diesel costs $4 a gallon not $1 a gallon.
Volvo claims a savings of around $3000 a year due to an 8% increase in fuel economy. I've not seen it and we use more DEF than the engineers claimed we would. I think it's a net zero situation. We still have a couple of pre EPA engine trucks left in our fleet 750,000 plus miles and the engines run better than most of the new ones. Less head aches but the new ones sure ride better.
The DEF regen units adds over $5,000 to the initial cost of the truck not to mention the repair bills.
Other than LA being able to breath I'm not sure it is worth the cost for the rest of the country.
