Who has the highest mileage 5.4 3V?
all other is done on a regular basis only the plugs have not been touched.I'll get brave one week end and do them.The truck has 98 % highway miles, about 800 a week,so I don't really expect to encounter too much carbon build up at the base of the plugs.
Work is only 5 miles away..... and I am only in the office 3 times a week...other two days I work from home.... so....... I don't put many miles on her 
When I "do" need to take a road trip, I take my 2002 F150 4x4
But that one only has 58K on it.

When I "do" need to take a road trip, I take my 2002 F150 4x4



