Hi Scotty. Greetings from California, love the channel! My wife just bought a 2019 Honda Civic 2.0L and she loves the car. Traded in her Hyundai Veloster for this one. My question is does she have to change the oil from Ow-20 to Ow-16? I know you mention before to do it for the 1.5L engines. Your thoughts?
Whatever the fill cap/owners manual says to use, that's what I'd use. That's how you keep your warranty intact.
What does the manufacturer recommend?
Use what is listed in your owners manual. Should also be on the oil fill cap, and listed on a tag in the engine bay as well.