George Miller
Well-known member
Well maybe I don't need to bother with it then. I was just going off what my Auto shop teacher in Vo Tech school told us. He said the older cars needed the lead to keep the valves cool because of what they were made of. Modern car valves had better metal that didn't need the lead.
Well since they didn't have lead back then I guess we don't need to be adding it in. Oh well he must have been wrong.
What he should have said, was trucks and tractors that pull hard and get the seats and valves real hot, could benefit from a lead substitute. Model A's do not need it.