Have a '98 Aspy with 127K and don't know the history. Running good, no miss but only appx. 36 mpg. Thought maybe new plugs would help the mpg. What say ye? Which plugs do you recommend.
8000? hmmm...Changed mine after the first season, had 9-10k on them, showed them to my mechanic and he said that he wouldn't have changed them. Have gone 2 seasons on this set, will be changing them before next season just because!Service manual shows replacement at 8000 miles. Standard condition plugs are NGK DPR7EA-9 or ND X22EPR-U9. Gap is .8mm-.9mm/.031"-.035".