[5window]

Oh, lord, these stupid threads pop up from time to time. Auto parts houses are in business to sell auto parts and supplies. That means 99.99% of their sales will be for vehicles built in the last 10 years. Add to that that many cars and trucks have mods made during the production run, sometimes monthly. Add to that that the pay scale for counter people is below the poverty level and you have a common scenario where no one wants, or needs, to know what radiator cap your 85 year old dinosaur needs.

The problem is not only the modern auto parts store, it's you/us and our old, obsolete beasts. For that, you need a specialty store and,fortunately they exist.