I have this UOA. Can you see bearing wear anywhere on this report? On the 2019 Miata what are main and connecting rod bearings made of?
This is outdated (2018) but can this help?The problem in determining the source of metallic elements is that one has to know the metallurgy of each of the machine components.
It is further complicated by the fact that many components in the engine can contribute to the same metal atoms.
A UOA only gives one an indication of the condition of the used oil as compared to the condition of the new oil (VOA).
Help with what?This is outdated (2018) but can this help?
It is kinda like a VOA but not from the same lab. Maybe not much help.Help with what?
Well, sort of, but this VOA analysis is 4 years old and formulations are changing at a rapid pace.It is kinda like a VOA but not from the same lab. Maybe not much help.
No.
Look at Lead, Copper, Aluminum.
Bearings are compromised of some of these materials in alloy form.
The change to bi-metal (aluminum/silicon) bearings started more than 20 years ago, most OEM's have made the switch.No.
Look at Lead, Copper, Aluminum.
Bearings are compromised of some of these materials in alloy form.
Thanks Mola.The problem in determining the source of metallic elements is that one has to know the metallurgy of each of the machine components.
It is further complicated by the fact that many components in the engine can contribute to the same metal atoms seen in a UOA.
A UOA only gives one an indication of the condition of the used oil as compared to the condition of the new oil (VOA).
They may not use a lead alloy but perhaps copper aluminum.It is my understanding that Mazda no longer uses lead anywhere in their vehicles including the engine.
Ya I forgot to add silicon and nickel. So Al, Cu, SI, Ni is some alloy form.The change to bi-metal (aluminum/silicon) bearings started more than 20 years ago, most OEM's have made the switch.