Thread: NGK's new Ruthenium spark plugs
View Single Post
Old 01-17-2019, 06:41 PM   #3 (permalink)
Ecky
Master EcoModder
 
Ecky's Avatar
 
Join Date: Dec 2011
Location: New Zealand
Posts: 5,021

ND Miata - '15 Mazda MX-5 Special Package
90 day: 39.99 mpg (US)
Thanks: 2,874
Thanked 2,517 Times in 1,557 Posts
Color me skeptical, but I'd give them a try.
  Reply With Quote