Amoco Ultimate News Today

Unveiling the Octane Ratings - from knocks to burns, demystify the numbers on the pump for optimal car performance. Get fuel-savvy insights now.

Published January 02. 2021 12:01AM  By Bob Weber, Tribune News Service Q: I bought new a 2018 Mazda6, 4-cylinder turbo. The specs call for semi-synthetic oil. Everyone who I know with auto expertise thinks I should use full synthetic, even a former engineer friend from GM. The tech personnel at my local dealership, including the manager, tell me to follow the specifications recommended. I called the engineering department at Mazda Corp. and a technical representative said, "stick with what you...