My 2003 has performed great, not a lot of miles. Now has about 40,000. Do I need to replace sparkplugs? I confess I haven't gone into dealer for all the (expensive) maintenance visits. Regular oil changes, nothing else. What do you think?
Hi Gene, The specified maintenance interval is 60K miles. There's no need to replace the iridium plugs sooner than that unless you have an engine misfire problem. Note that the very same iridium spark plugs are installed in 2G, which has a 120K mile service interval (or 150K miles in CA and other PZEV states.)
My '01 prius has 105000 miles on it and I just got my first sparkplugs replaced. Which means my original lasted me 105000. I only replaced it as a maintenance interval and not because I needed 'em.
I bought Bosch Platinum +4 Fusions for my 2002 with noticeable improvements to Fuel Economy and definitely performance. It pulls pretty hard from mid range and helps with passing power. Plus the last about 100,000 miles so I am told!
If you like 'em mlibanio there's not much I can say. But I would have thought that platinum plugs are a step down from iridium.
I read reviews that Bosch plugs aren't very good. I would get OEM iridium plugs or NGK Iridium plugs. Why get platinum when its a step down from Iridium...
Great! Now I'm starting to think of a plug with a small but strong alpha particle emitter core in the high voltage electrode. The alpha particles will leave an ionization track so when the high voltage is applied, it has multiple paths already mapped out: pre-ionization paths - reduce the peak voltage needed multiple paths - increase the spark spread to improve start of combustion Nothing like making a common consumer product radio active for special disposal requires ... like the old radium dials of another age. Bob Wilson
