Dick: I don't believe you have mislead anyone. You stated that your damage occurred after just the kind of treatment over a long period of time you said that if you avoided, you wouldn't have a problem. I run a 1951 model tractor pulling a 12 foot batwing mower in the summer, and an 8 foot wide snowblower in the winter. I use unleaded gas, no additive, and I am not experiencing any performance problems after 15 years. I think if you are doing a valve job, then replacing the valve seats with hard seats is a good idea, since you are in there anyway. But I don't see any need to specifically tear the car apart just to install hardened valve seats. ----------------- 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