I've been using Penzoil 10/30 conventional for years in the Pontipigs with no issues however I tried Lucas hot/rod and just recently Driven 10/30 conventional.
She seems a little quieter but no issues so far.
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Esquire
'74 T/A 455 Y-code SD clone
previously on Dawson's Creek:
'74 T/A 400
'81 AMC SX/4
'69 FB 350
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