Preferred sparkplugs?
Question:
1989 GMC Safari 4.3L. Changing plugs is a pain in the butt. So I am looking at long life plugs like platinum plugs. I am biased against Champion because I had one shear off in an aluminum head on another vehicle. Probably had little to do with the spark plug but if you have ever had this happen you need to take out the frustration somewhere. What plugs do you like best and why? I have been using antiseize on aluminum heads. Should I use it on my cast iron ones too? Thanks for your opinions! Barry
Response:
I use AC Delco R43TSM in my 4.3 (I think that’s the number of the plug), can’t really go wrong, the first set in the truck (from the factory) lasted 60,000 miles before I replaced for regular maintenence. I would NOT reccomend going that long, 30,000 miles is about the longest I’d go on a set of plugs. Platinum plugs did nothing for me, I replaced a set of them in my 4.3 with the above mentioned AC Delco plugs and saw performance and gas mileage gains, the platinum plugs only had around 30,000 miles on them at the time of removal… – Hide quoted text — Show quoted text – >1989 GMC Safari 4.3L. Changing plugs is a pain in the butt. So I am >looking at long life plugs like platinum plugs. I am biased against >Champion because I had one shear off in an aluminum head on another >vehicle. Probably had little to do with the spark plug but if you have >ever had this happen you need to take out the frustration somewhere. >What plugs do you like best and why? I have been using antiseize on >aluminum heads. Should I use it on my cast iron ones too? >Thanks for your opinions! >Barry
