I'm watching this video:
I started this awhile back here: https://bobistheoilguy.com/forums/threads/collection-of-20-weight-api-sp-voas.342292/ and here: https://bobistheoilguy.com/forums/threads/collection-of-xw-30-api-sp-voas.343019/ My time no longer allows me to keep it updated the way I'd like. Plus, people were...
bobistheoilguy.com
It's an analysis of Amazon Basics Euro 0W-40 from earlier this year. It has 1242 PPM Phos, 1327 PPM zinc. Are those levels appropriate for flat tappet engines? (don't know about the S or how important that is)
I'm under the impression that any oil that has enough Z and P for FT engines was bad for cat convertors.