[NGK spark plugs] iridium vs. platinum
lots and lots of fail
Joined: Dec 1999
Posts: 23,004
Likes: 1
From: Deeeeeeeeeeeeeeetroit
Originally Posted by SmutWanter
You most likely do have bad or warped gaskets seals in that particular cylinder. Thats an easy problem to fix, and in terms of the spark plug you don't have to throw them out every time you see the oil on them. Instead, just clean them off with rubbing alcohol and a toothbrush, let air dry and they're as good as new.
Senior Member
Joined: Nov 2004
Posts: 253
Likes: 0
From: Southeast Iowa
Just stick with the OEM recommended plugs. I beleive that the temperature of irridium and platinum plugs in the same car may not be the same.
My motorcycle had irridium plugs that lasted almost 30,000 miles and were still working fine when I changed them. 30,000 in a motorcycle is probably comparable to 120,000 on a car since the RPM's average 4 times higher. Most newer high performance motortcycles with fuel injection all use irridum plugs.
My motorcycle had irridium plugs that lasted almost 30,000 miles and were still working fine when I changed them. 30,000 in a motorcycle is probably comparable to 120,000 on a car since the RPM's average 4 times higher. Most newer high performance motortcycles with fuel injection all use irridum plugs.