Join Date: Apr 2010
Location: Brantford Ontario
I don't know why some of you are so conserned with the E3 spark plugs, they are warr. for five yrs. or 100,000 miles for use in personal cars and trucks.
10,940 K's on mine now since changeing them over on 9/15/2011.
I'm thinking of replaceing them again after 60,000 K's to avoid any drama with the cyl. heads, even though the special Ford thread lube was used on them.
A Ford "Motovac Service" will be performed again at that time as well.
Press on regardless!