Yes, Z, I unscrew the cap and check the seal integrity. but I would never break a cap seal in the store, and fortunately the new clear-cap Valvoline jug does not have a cap seal Call me paranoid, sort-ofYou unscrew the cap and break the seal to see if there's a foil seal? Valvoline 5 qt jugs have a clear cap so you can see if the foil seal is intact or not.
- Ken