while my friend jack and i were putting the head back on george henry this weekend, we had a discussion about how the head may not have all the good old lead build up that it developed over the years now that it has been cleaned up.

prior to the cam gear failure, we had done a valve check and were very pleased with the discovery that in spite of the engine (to my knowledge) has never had the valve clearance checked before, was completely within factory tolerances. in other words, there was no significant valve recession even though i have been running un-leaded fuel in it since i have been driving it daily since 95.

so...would now be the time to think about adding something to a tank of fuel every now and then or do i just run the one i brung?