The migration from the gaskets of plasticized PVC in metal closures usually far exceeds the legal limits if the packed food contains some free oil. If the gaskets continue to consist of PVC, polyadipates seem to be the only acceptable plasticizers, although difficult to work with: they render the plastisol highly viscous and make it difficult to place a uniform ring into the lid. This suggests dilution with plasticizers of low viscosity. Results from simulating tests (olive oil in direct contact) confirm that the migration of polyadipates is far lower, but also that even the migration of minor portions of diluting plasticizers is critical for the overall migration. The first tests with 11 packed foods, stored and repeatedly shaken for up to 2 years, show migration of polyadipate clearly below the limits. It was lower than that determined by simulating tests, whereas the migration of ESBO was several times higher, questioning the suitability of presently applied testing.