Warren;
For the POS race car when I change plugs, I always put in new plugs (Champions)... I ususally use two sets of plugs per racing season as I have my car tuned very well...one set would probably do for a racing season....
These plugs are about 4 bucks each and I just hate throwing them away, so I clean them and put them aside and use them for the lawn mower or the Toyota.....
I was changing the
oil in the Toyota one day and decided to look at the plugs, they had been in the car for about 75,000 miles and were shot, I didn't feel like going to the store to get a new set, and had an old set from the race car on the work bench, I checked and they were the same length and size, so I put them in thinking later on I'll get the correct plugs for the Toyota, but the darn things runs great with the used Champions in it, so I used them, same for the lawn mower, 2 cylinder, 18 hp Briggs/Straton motor.....
The "race plugs" are pretty clean when I change them and it only takes about 2 or 3 seconds in the bead blaster to get them looking like new.......
David