I have already read the threads stating that the NGK Izfr5g is the recommended plug for the Opti....but I am having a problem finding them in the PA area, and also the last time I replaced them, they were a little steep on the price....I found Iridium tipped plugs from AutoLite that is the direct replacement for the NGK and even had a higher heat rating, am I able to use these plugs?????
Geno![]()