stockgp Posted October 15, 2007 Report Share Posted October 15, 2007 anyone? Quote Link to comment Share on other sites More sharing options...
5speedz34 Posted October 15, 2007 Report Share Posted October 15, 2007 I think yes, but eventually probabaly around 98 or something, the newer 3x00's went to platinum plug I'm sure. Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted October 15, 2007 Report Share Posted October 15, 2007 If your talking about pysical size and thread pitchs and such.. yes they are... now type of plug they are different... they went from copper to platnium to iridium.. Quote Link to comment Share on other sites More sharing options...
MonteCarloDude Posted October 15, 2007 Report Share Posted October 15, 2007 I think yes, but eventually probabaly around 98 or something, the newer 3x00's went to platinum plug I'm sure. my 98 takes platinum plugs. Quote Link to comment Share on other sites More sharing options...
stockgp Posted October 15, 2007 Author Report Share Posted October 15, 2007 well, i'm looking at ngk iridiums for a monte 3100, juust making sure they'll work. Â thanks Quote Link to comment Share on other sites More sharing options...
per0781 Posted October 15, 2007 Report Share Posted October 15, 2007 why overpay for spark plugs? Â NGK TR55's all the way. Quote Link to comment Share on other sites More sharing options...
stockgp Posted October 15, 2007 Author Report Share Posted October 15, 2007 because i'm getting iridiums for the same price Quote Link to comment Share on other sites More sharing options...
IRONDOG442 Posted October 15, 2007 Report Share Posted October 15, 2007 NGKs came stock in the LX-5 engines, FYI ! Quote Link to comment Share on other sites More sharing options...
1979lee Posted October 15, 2007 Report Share Posted October 15, 2007 Â my 98 takes platinum plugs. Â same here Quote Link to comment Share on other sites More sharing options...
89SupremeCutty Posted October 17, 2007 Report Share Posted October 17, 2007 what was the change gm made in 98 to make those engines use platinum? Quote Link to comment Share on other sites More sharing options...
cutlassdude96 Posted October 17, 2007 Report Share Posted October 17, 2007 they switch to platinum in 96 Quote Link to comment Share on other sites More sharing options...
89SupremeCutty Posted October 17, 2007 Report Share Posted October 17, 2007 well whatever year gm made the switch, why did they do it? Quote Link to comment Share on other sites More sharing options...
gp90se Posted October 17, 2007 Report Share Posted October 17, 2007 supposed to last longer between changes (30k vs 100k) and supposedly better mpg, but I don't believe either. Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted October 17, 2007 Report Share Posted October 17, 2007 Only reason they went from copper to platnium to iridium is because of the change intervals. copper is every 30,000mi platnium is every 50,000mi and iridium is every 100,000mi Or unless you foul a plug first Quote Link to comment Share on other sites More sharing options...
89SupremeCutty Posted October 17, 2007 Report Share Posted October 17, 2007 mileage between changing plugs don't matter to me. i usually change the plugs, wires and air filter once a year. the only vehicle i didn't do that to was my crown vic. Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted October 18, 2007 Report Share Posted October 18, 2007 If you change them that often just stick with the copper plugs as they are the cheapest Quote Link to comment Share on other sites More sharing options...
89SupremeCutty Posted October 18, 2007 Report Share Posted October 18, 2007 does the difference in metals make the car run different? like if i went from platinum to copper, would it run better or worse? Quote Link to comment Share on other sites More sharing options...
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