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hello, my name is ***** ***** I will be glad to assist you. please allow me a couple of minutes to gather some basic info.Roy
ok, when leaded fuel went away, also went the lube needed. thats when all the cars went to sodium filled valves.
you can use a supplement for the valves that you add to fuel for this.
you can replace the valves with sodium filled and not worry about it anymore.
I recommend replacing the valves. since it is a flat head, it is not that bad of a job.