Harold, I hate to disagree with you but the HR6 no matter what tip is a the coldest plug in the series from the 6 being the coldest to the 7,8,9,and 10 being the hottest. The HR 6 is a highway and the 8 is a good hop to the store and short drive plug if you want to keep excess oil and fuel burned off. Talking about wires, The name Nology is mostly what you bought. They buy the wires from the same source as I do and the boot and cap as well. My 8mm or 8.5mm wires with the MSD coil and Platinum + 4 plugs I would match with any one and at less than 1/2 the price. John Hervey www.specialtauto.com www.deloreanautoparts.com -----Original Message----- From:Harold McElraft Subject: [DML] Re: spark plugs/brake fluid 3 vs. 4 If you have a stock engine (excludes turbos and other mods that would change internal characteristics except exhaust - that probably doesn't change much), the only "choice" I can think of in spark plugs is the brand. Which ever plug you pick it should cross reference with the OEM Bosch HR6DS. Anything else, in my opinion, is asking for trouble. The "S" refers to a silver based tip, "P" is platinum, and "C" is copper. I have had good luck with either Silver or Platinum - Silver is my personal preference. My last tune-up I went for DMCH's NOLOGY kit. It has silver plugs similar to the OEM but the wires and amp are supposed to kick up the spark punch, etc. The real benefit I noticed with the NOLOGY is more punch at the 4-6,000 rpm range. My car is an auto and the quicker high-end revs make it more fun to drive. The "6" plug is a good mid range operating temp plug - you should not stray from that unless you are into serious mods, etc. and/or know what to look for in changing the plug operating temp range. Harold McElraft - 3354 To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/