OK, Today was my day to do a Google search on " Hypoid Gear Oil Lubrication " , but when doing that I caught a link to a test on diesel oils. http://bestmotoroil.weebly.com/diesel-oil-testing.html#.VkUIrnarQZ8
To my amazement , the "Load Carry Capacity / Film Strength " all of these diesel oils were LESS than a lot of non-diesel oils. I always thought diesel oils were more heavy-duty than non-diesels oils. The explanation was that diesels engines are low speed engines and are designed for lower loads than non-diesel engines.
I think from what I have read before today, that diesels oils are designed to better prevent ring deposits, tho.
So now I have to re-think what I will be running in the old ST. I'm most concerned about the ST being a high RPM motor compared to a diesel. I think I will be using either a 10W-40 or 15W-40 , but not sure if it will be straight mineral oil or a full synthetic and if it will need to meet the JASO MB2 standard. Found some interesting test info on MB2 and other oils, too.
If I can find Alex Schmidt's email, I'll try to find what oil he runs. Last word I heard was he has over 400K miles w/o ever disassembling the engine.
To my amazement , the "Load Carry Capacity / Film Strength " all of these diesel oils were LESS than a lot of non-diesel oils. I always thought diesel oils were more heavy-duty than non-diesels oils. The explanation was that diesels engines are low speed engines and are designed for lower loads than non-diesel engines.
I think from what I have read before today, that diesels oils are designed to better prevent ring deposits, tho.
So now I have to re-think what I will be running in the old ST. I'm most concerned about the ST being a high RPM motor compared to a diesel. I think I will be using either a 10W-40 or 15W-40 , but not sure if it will be straight mineral oil or a full synthetic and if it will need to meet the JASO MB2 standard. Found some interesting test info on MB2 and other oils, too.
If I can find Alex Schmidt's email, I'll try to find what oil he runs. Last word I heard was he has over 400K miles w/o ever disassembling the engine.