I bought the Zaino leather products and have been very happy with the results. The Zaino web site says that Z10 can also be used on the dashboard and other vinyl surfaces in the interior. Is this a good idea, or would something like 303 be better? It seems like the âہ“natural leather oilsâ€Â� in the Zaino may eventually cause problems. If the Zaino is good on the dashboard, should I another protectant in between applications of the Z10?