Eh, I dunno, L'Dude. My '97 E150 went to 102k miles before it started dropin a cylinder, under load in OD. Up until that time it ran like a swiss watch and still did under normal acceleration and cruise.<br /><br />Now I have 80k on the second set, using one quart of AMSOIL 0w-30 every 4500 mi and those plugs are not missin a beat.Originally posted by LubeDude:<br /> 100,000 and Spark Plug dosnt belong in the same sentence. Also its an oxymoron!!
Eh, whadya expect them to say, L'Dude. There starvin out de, wit dees 100K interval tune ups. But I must say, they have ways to make up for it. I just had to replace the rubber connector (about 8" long) between my filler neck and the gas tank snout. It would pour out gasoline between the fuel tank and the frame rail, every time I filled it up. Also the 'check engine' light was on due to a breach in the fuel system.<br /><br />The hose cost $86.00 (probably $10-15 at Napa), they wanted $120.00 to diagnose it. I refused to pay it. (settled for $60.) and $80 to install it. Add it up. $230.00 + tax to replace an 8" filler hose and to reset the check engine lite. GrrrrrOriginally posted by LubeDude:<br /> Not according to my Ford mechanic freind that works for the local Ford dealership, he says for proper and better performance to change them at about 75,000.
The sparkplugs last 100K easily. But the filters, fuel and air, have a hard time doing it.Those hundred thousand mile spark plugs are even <br />better than you are led to believe.<br />These plugs fire on the power stroke and the <br />exhaust stroke. Making them fire twice as many <br />times in a hundred thousand miles.
Ya, I think I will.Originally posted by Copespitter:<br /> Try dumping a bottle or two of fuel injector cleaner in your gas tank. I've done it when my cars are idling a bit ruff and I think it helps.<br /><br />Besides, its a Ford. Your lucky the thing is still running.