On our 59 Vette restomod I run a crate ZZ4 engine with a Eddy chrome appearing intake and carb. When they get somewhat stained or dull from various substances,,,antifreeze, gasoline, oil, etc.

Wipe them down with a blue paper shop towel and a bit of WD 40. Back to new in no time. The transformation is amazing and stays that way until stained again. And much easier than trying with polishes.