Hello all,

Getting ready to do a tune-up on my '86 560SEL w/ 178,000 miles on it – Bosch rotor & cap, Bremi/Karlyn/STI 113M wires, NGK BP5ES (7832) plugs with a .042 gap and some nickle anti-seize.

The plugs worry me a bit as of the eight I have on hand four are the newer “silver” ones made in Japan ones and four are NOS “gold” ones assembled in the US so my concern is whether or not the two are compatible enough to be mixed and matched?

I personally can't see a reason why they wouldn't be which is what worries me :^)

Thanks in advance for your input.

Cheers!