Posted by Paul on May 04, 1999 at 19:04:38:
In Reply to: What kind of Fuel? posted by Brandon Grindel on May 03, 1999 at 22:51:43:
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I've run several old mopars through the years and never had a bit of trouble out of any of them on unleaded. It will only be a factor if you really work the engine hard. Some of the heavier truck engines of this and earlier vintage came with sodium filled valves. If you have these, you don't need to run hardened valve seats.