Advice, looking for an f250
 

I’m looking for an f250. But I don’t understand the benefit of flex fuel. Is it as good as diesel for towing and fuel economy? What are the best years? I was told to stay far away from 03-12’.

Does the flex fuel engine have maintenance issues? Does it have porcelain spark plugs?

Any advice what I should look for or avoid?

One item at a time, all gasoline engines have porcelain spark plugs and only a certain few had some problems. Most were able to be handled without any serious problems.
One thing to lookout for would be a V-8 engine from 2004 that has been neglected as far as having the spark plugs replaced, otherwise if any doubt have your mechanic/tech also look it over especially underneath if in the salt belt.

I don't know your budget or how you intend to use your truck but if you seek out gas V-8 models, go for 2009's and after .The V-8's spark plugs were redesigned for 2009 and were not prone to snapping in two during their removal. I would not buy a diesel unless I were planning on towing very heavy loads.

Thank for the advice. Do the 250s have camshaft problems like the 150

Instead of going back and forth, check out this site. You can find out what the common problems were for various years.

https://raybuck.com/common-ford-truck-issues/

Thank you
 

Thanks guys. I got a 2012 6.7L f250. It’s my understanding the head gasket issue was only with 6.4L. And the 6.7 is a powerhouse. I know some people have had issues with this year 6.7 as with any truck. But in general is it a dependable truck?