× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: engine break-in oil
Posted to Educators Forum on 8/30/2023 1 Reply

[...trimmed text...]

Not sure. Is there one true definition?

My understanding is a court judge threw the word 'Synthetic' out over a case between Amsoil and Castrol a long time ago.

A few links provided to make it mo... Login to read more.

1 Replies Received (View Replies)