=========================================================== Your opinion counts! We?re conducting a survey for a computer service/repair company. When you complete our survey, you will also be entered into a drawing for one of ten $100 prizes. Just click caab8K1b7yoMza/ Val Rad =========================================================== I've read numerous times over the years that heads that were run with leaded gas in their history have naturally built up protection from the lead deposits that had built up on the valve seal area over time. As Dave C. pointed out, just a little of that lead goes a long way in protecting the valves! I've also read that running unleaded it would take *lots and lots* of prolonged extreme high rpm use to cause a problem, not driver style use. I suppose putting in some top oil to the unleaded gas, like Marvel, would not hurt, even if the only benefit of the additive was to ease the mind of the Mopar's owner. :-) Gary H. > Lee Sumpter wrote: > > OK, Thanks for all the replies. Out of the 10 responses recieved for > > the question about problems with running stock heads without > > hardened seats, I got no one who has ACTUALLY had, or known of > > anyone, that ever had a problem! Could the hardened seat theory just > > be a "modern myth"? I'm starting to wonder..... > > Anyone else care to add anything? =========================================================== $6.95 .com Domain Name Sale! Limited Time! ICANN Accredited GoDaddy! caab7pQb7yoMzf/ GoDaddy =========================================================== ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html. b7yoMz.