using bosch platinum +4
#3
#4
#7
Over the years I have had probably hundreds of people switch to Plus 4's and probably only 2 complained about them, one wouldn't change his factory wires at around 100,000 and wondered why the Plus 4's didn't help him
The last set I ran, I switched out at around 88,000 miles when doing head gaskets and only because I wanted to try the new Bosch Fuson which I was not pleased with.
Oh, and no, the plugs will not cause overheating of the cylinders or predetenation.
The last set I ran, I switched out at around 88,000 miles when doing head gaskets and only because I wanted to try the new Bosch Fuson which I was not pleased with.
Oh, and no, the plugs will not cause overheating of the cylinders or predetenation.
#9
IMHO things that lead owners to do it once and forget about it (150,000 mile coolant, life time brake fluid, life time transmission fluid, etc.) usually come back to bite you in your lifetime. I do not dispute that there may be performance gains at certain loads and rpms. If you like them, change them at some kind of interval. The D1 is so easy to change plugs on, nothing like the pull the-intake-method on my old Montero (about $450 for plugs at the stealership).
And Disco Mike's performance might be more noticed at his altitude vs. the 17 feet above sea level where I am. But I may well try a set next time I change plugs.
And Disco Mike's performance might be more noticed at his altitude vs. the 17 feet above sea level where I am. But I may well try a set next time I change plugs.