S Stevenz Joined Jun 13, 2012 Messages 1 Location Melbourne May 14, 2025 #61 MarkMax said: Hi. Is it possible to mix API SM and API SN in one engine? Is it possible that additives create some particles (such as oxides or salts) that can damage the engine? I am from Europe and API SM is hard to find. Thank you Click to expand... It's possible to mix them. There would be no way to know what would happen based solely on the API specification. Chances are, it will be fine.
MarkMax said: Hi. Is it possible to mix API SM and API SN in one engine? Is it possible that additives create some particles (such as oxides or salts) that can damage the engine? I am from Europe and API SM is hard to find. Thank you Click to expand... It's possible to mix them. There would be no way to know what would happen based solely on the API specification. Chances are, it will be fine.
