Reply To: Synthetic engine oil is better

I switched an older car to synthetic (was almost an adult!) and all was good. That was based on my mechanic’s recommendation, which also was suitable for my climate.

Manufacturers must consider a general performance across a range of conditions and climates. Freezing. Steaming. In between.

Aren’t manufacturers also invested in oil? And/or maybe they have some political incentives to keep doing what they’ve been doing? — And maybe AAA and Business Insider do too.