To stay in the 30 grade for warranty I'd Pennzoil platinum euro L it. If you're feeling adventurous I'd go for the Quaker state euro 5w-40 but in truth both of the oils are within 1cst of each other at 100c. They're so close and I'd argue the Quaker state is better since it's both better rated and cheaper too. And I've heard that QSUD QSE and Pennzoil platinum are extremely similar.