I have never had problems with platinum plugs in the newer cars that I drive, in fact I have about 80,000 miles on a set in one of my cars right now (not recommended). The thing is, there is little point in spending the money for a long life spark plug in a car that doesn't burn fuel efficiently enough to get the benefit. The spark plugs in '50s and '60s Imperials are suppose to be changed every 10-15,000 miles. Newer cars can easily go 60,000 miles between plug sets, so that's why I purchase the higher price plugs. Paul In a message dated 10/25/2004 11:06:49 PM Eastern Daylight Time, Christopher Hoffman <imperial67@xxxxxxxxxxxxx> writes: >Jay, > >I'd avoid platinum in an older Mopar (like, pre-2000). Tried 'em once in one >of my 1990s Jeeps (with a 318, er, 5.2) and the car barely idled. Went back >to regular Autolites and all was well. Heard the same from several other >people. > >As for SplitFires, in a desperate attempt to pass CA smog test after my '67 >had sat for close to a year without a long drive (though the new paint >looked great!), I tried the snake-oil approach, including SplitFires, and >while the car ran well for about 100 miles (and passed smog), it then began >to misfire terribly. Upon removing the SplitFires, I found that three of >them had completely blown off their electrodes (all three per plug) and the >rest were looking mighty ill. That was when I discovered Autolites for the >first time, and I never went back. > >A properly set-up 440 with a stock distributor and the timing set perhaps a >little more retarded than spec (as little as 4 deg BTDC rather than 16) >should run quite well unless there is some other problem requiring more than >a band-aid solution. > >Just my $0.02! > >-- >Chris in LA >67 Crown >78 NYB Salon > > > >On 10/25/04 4:53 pm, JCantor791@xxxxxxx (JCantor791@xxxxxxx) wrote: > >> One question came out of all of my research - would there be any advantage to >> gold or platinum plugs in early Hemi's over conventional copper plugs? ?Both >> Champion and Autolite claim to offer a platinum plug for the 354. > > > >----------------- ?http://www.imperialclub.com ?----------------- >This message was sent to you by the Imperial Mailing List. Please >reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be >shared with everyone. Private messages (and attachments) for the >Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx >To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm > > ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm