I belong to a group for old flathead engines. Many on the group like to use HDEOs in their engines. While I don't use them personally, I see the appeal, and understand that these oils will work just fine.
The problem is, there is a member who is a former automotive engineer. While knowledgeable about the engines, he is a chicken little kind of guy about oil. He emphatically warns members that "diesel oil" will damage their engines. Unfortunately, many believe his scare tactics.
I have posted links to PDSs which show that most of these oils also carry a gasoline engine (S) rating, but he continues in his quest to spread his ignorance. Does anyone have a link that I can share with the group that explains that dual-rated oils are fine for gasoline engines? I'm looking for something authoritative, such as something from the PQIA, for example.
I couldn't care less about winning an argument with some foolish keyboard commando, but I would like to be able to assure other members that their oil choice of Rotella, etc. is not harmful to their classic car.
Thanks in advance!
The problem is, there is a member who is a former automotive engineer. While knowledgeable about the engines, he is a chicken little kind of guy about oil. He emphatically warns members that "diesel oil" will damage their engines. Unfortunately, many believe his scare tactics.
I have posted links to PDSs which show that most of these oils also carry a gasoline engine (S) rating, but he continues in his quest to spread his ignorance. Does anyone have a link that I can share with the group that explains that dual-rated oils are fine for gasoline engines? I'm looking for something authoritative, such as something from the PQIA, for example.
I couldn't care less about winning an argument with some foolish keyboard commando, but I would like to be able to assure other members that their oil choice of Rotella, etc. is not harmful to their classic car.
Thanks in advance!