I'm amazed that in these days of technology, we haven't yet managed to eradicate accidents that are due to carb icing. As always, there are a lot of old wives tales out there.
Anyway, I digress. In my experience, Continental A-65 and C-90 are both prone to carb icing if allowed to be, together with VWs. Somebody managed to stop the engine of our C90 engined Cub on finals even though he had selected heat on finals (although i suspect he didnt select it for long enough). Many pilots I fly with only use it for 5 or so seconds which is no use to anyone.
On larger radials, R985 & R1340, I have never needed to use carb heat.