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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 are using.” Any opinions? R.K., Glastonbury, Conn.
A: Stick with what you are using. Although full synthetic is marvelous, it comes with a premium price tag. It can cost nearly double. Use it if you wish or if you win the lottery.
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