There is nothing set in stone as far as mlieage is concerned, there can't be. The reason is that the life of a spark plug depends mainly on what type of driving you do, and how good the gas is that you are using. If you use nothing but top grade fuel, and only drive on the highway, you are going to get a lot more life from the plugs than someone who uses cheap gas and drives stop-start constantly through town all the time. The Focus plugs are double platinum plugs, so you may get 100,000 mles out of them, that seems to be the general consensus, but it is really a judgment call on the part of the technician who pulls the plug out and examines it.
About every 50,000 miles.
According to the owners manual, they have platinum plugs that should be changed at 100,000 miles.
30000 miles
every 100,000 km
The manufacturer recommends that the spark plugs are changed every 30,000 miles. Many individuals have experienced a much longer life for the spark plugs.
thank you
100K if they are platinum plugs, 50K if they are regular plugs.
Once on 1-2 year on regular spark plugs. Once every there years on High end spark plugs.
the transmition ,is probably not adjusted to the spark plugs,or their not the right spark plugs
about every 75000 miles
I think my 07 manual says 100,000 miles
Spark plugs are electrical components that should not have contact with any sort of fluid. The engine warning light is on as a warning for a possible electrical system issue.