Have a 2007 Ford 4.6 litre. Ford F-150 4by4 with 168000 k getting about 3000 dollars worth of head work done right now. After driving this pile of **** for about 4 years. I've decided that Ford has to be selling the worst running and factory backed truck on the planet. My last GMC gave my 460000 with really no problems. Junk I say junk. Fixing this pile and am selling it to the first person with cash. Back to to GMC. Don't know what I was thinking. U all have to have your heads examined for talking this Ford junk up. Cheers.