old ones yes, IE 97 to 03???? Newer 08+ I had zero issues on my 08 and it was on jobsites towing boats etc. Keep in mind the expedition is tested to the same standards the F-150 is now (07+) so they have really cranked up the quality.

That being said I did but the extended warranty, PremierCare or PremiumCare or whatever it's called for 7 years 125K miles (paid 2,100 for it with zero deductable and a rental car upgrade). I figure that if I'm going to have issues with it they will pop up around 60 to 80K (my 1st never had issues).