- Joined
- May 19, 2007
- Messages
- 7,745
Once the switch happened with the ultra low sulfur diesel, all of the manufactures had trouble as the supply-chain didn't meet the specs for quite some time. And since injector damage can take some time to show up, I wouldn't be guessing it was the trucks off the bat. That said, between the the changes to the fuel system, and other changes to the engines, I wouldn't be surprised if there were troubles. the 5.9 cummins was tweaked and proven over a long time, and the 6.7 made some huge sacrifices to make up for the fuel and emission changes. We had much more trouble keeping 07 and 08 fords on the road though, and those had a special invoice code as they were much more expensive than the others to do an oil change on.