I also spoke to Rob G about the Platinum plugs and he showed me some he removed from a car he had tuned up. Somehow these plugs seem prone to blow-by between the porcelin and the shell. Although they might not wear, blow-by is unacceptable. Considering the cost it is MUCH cheaper to go with the standard plugs and just change them often (once every ten years or 10,000 miles?). Most of the Deloreans I have seen are still running on origional parts which are over 20 years old and they don't have Platinum plugs! Even if the plugs never wear out there are other parts which still should be replaced once in a while like the ignition wires. David Teitelbaum vin 10757 --- In dmcnews@xxxx, Soma576@xxxx wrote: > In a message dated 4/15/02 7:28:54 PM Central Daylight Time, > tgoodwin@xxxx writes: > > > > Got the tune-up package from John Hervey. I installed the Bosch > > Platinum +4 plugs. You can see a pic of it here: > > > > http://www.specialtauto.com/images/boschtuneupkit.jpg > > I don't know if that's the problem or not, but Rob Grady told me he doesn't > put the platinum plugs into the cars he works on - he said they don't > performin the PRV as well as the copper or silver tip plugs he sells. sure, > the platinum plugs probably last longer, but i'd rather go with overall > reliability than sheer durability. not only that, but you know what it's > like to pull steel out of aluminum after many years... i wouldn't want a plug > to break off in there because i bought plugs that 'last forever'!!!!!! > > just a thought! > Andy > > Soma576@xxxx > 1982 DeLorean DMC-12 VIN#11596 > Fargo, ND 58102 > > > [Non-text portions of this message have been removed]