Thank you for your encouragement C5ZZKGT,
I know the oil filter on my car will not be engine colour (390 big block) and in a first edition workshop manual shop manual shows an illustration of the black oil filter with yellow inkstamp (Assembly line ?) the Red rotunda would be replaced at 6000mile.
If the black filter is an assembly line filter, with this run-in oil and filter replaced during pre-delivery, would the white FL-1 be installed prior to the 6000 mile service.
While this is not Mustang related, I hoped that the oil filter practice would be across the board procedure.
Many thanks to all.