Originally Posted By: lockrod
Ok this is for the amsoil guy! I have a 2007 ford f-150 with 109,000 miles on it and the moter just failed!Dead! Have run amsoil since i drove it off the lot,as a matter of fact in tranny and rear end.I went to the shop to take a peak at the moter>>TRASH!SLUDGE!VARNISH! cam lobes worn,timming chains worn,question is was this the moter's design flaw,as in oiling system,or just the [censored] 5.4 liter from ford.Looked like it dropped a valve,Mech said he's no fan of amsoil and he does this for a living,I have read and heard of all the great Amsoil stories about engines lasting for ever1 Now I not so sure,7 grand later and a new moter I think i will try something else1At least for the next 100,000 miles...
As you see from the replies blaming the oil is tough w/o pics and evidence to support it. But I'll toss this out there, I bet shorter OCI's and/or a UOA would have prolonged the life of that engine a little longer. Next time you plan on extended OCI's get a UOA to back it up, don't rely on the blenders claims or sales hype like some people do. I have a friend doing just that with his Hemi Ram, not good IMO.
Were you adding coolant to that engine?