Originally Posted by JAG
As for protecting better, I don't know because that is hard to determine. For steel and iron wear, I put more faith in examining how much material an oil magnet catches than I do a UOA. UOAs are actually good at detecting corrosive wear because of the small particle sizes usually involved, and I have noticed that Red Line oils tend to have higher copper and/or lead UOA wear numbers than mainstream brands. That's not necessarily a problem. Whether it is depends on how high the wear numbers are, what the bearing materials in the engine are made of, whether it has a copper oil cooler, and prior UOA history.
As for lasting longer than those other two oils, I doubt it. Those oils meet very demanding oil specifications designed for long oil change intervals.
Great points.
As for protecting better, I don't know because that is hard to determine. For steel and iron wear, I put more faith in examining how much material an oil magnet catches than I do a UOA. UOAs are actually good at detecting corrosive wear because of the small particle sizes usually involved, and I have noticed that Red Line oils tend to have higher copper and/or lead UOA wear numbers than mainstream brands. That's not necessarily a problem. Whether it is depends on how high the wear numbers are, what the bearing materials in the engine are made of, whether it has a copper oil cooler, and prior UOA history.
As for lasting longer than those other two oils, I doubt it. Those oils meet very demanding oil specifications designed for long oil change intervals.
Great points.