2008 Ford F-350 Super Duty XL 4dr SuperCab SB (5.4L 8cyl 6M)
I had a hard time during my 27000 to 28000 km mark. My fuel economy went from 690 km per tank to 390. Wow! It took 3 attempts and two diffrent dealerships to fix. I blew all my o rings and injectors. I was blown away as 1 injector maybe but all of them wow. So after a mechanic it's all back to normal and my economy is still climbing.
† Edmunds.com received the highest numerical score in the proprietary J.D. Power 2014 Third-Party Automotive Website Evaluation Study℠. Results based on responses from 3,381 responses, measuring 14 companies and measures third-party automotive website usefulness among new and used vehicle shoppers. Proprietary study results are based on experiences and perceptions of owners surveyed from January 2014. Your experiences may vary. Visit jdpower.com.