Dropped by autozone for something and noticed a clearance rack as soon as walk in and had pennzoil euro on sale for 2 dallors off. Not much of a sale but guy said really don't need to use this oil unless you have an application for it as he said it could cause harm to seals. I have not heard this but maybe I missed something. I'm hoping he is wrong because I been using some of these euro oils because of clearance prices last couple of years. So is euro oils bad if not specified for your vehicle?