I am so confused with this warranty issue. The sales manager at my dealer has been checking for a couple of days but has not determined exact interpretation. I was told at purchase that the factory warranty would NOT be compromised by TK installation. Also I bought an extended warranty. The dealer is having problems with this. Has anyone seen a clear statement about this? I saw the posting but it is not clear to any of us here as to how a dealer would determine an engine failure as caused by TK. Ford - help!