Then there is this:
Surprising Findings from Oil Analysis of Automotive Engines
David E. Newton, Carrier Corporation/UTC
http://www.machinerylubrication.com/Read/30383/engines-oil-analysis
Quote:
The vehicle went from a steady diet of a synthetic oil with a premium filter to a quality conventional oil with an off-the-shelf filter. The data shows that the average wear metals shifted less than a point after this change. All shifts were well within one standard deviation for each distinct metal.
Quote:
What can be surmised from these results is that there was no tangible benefit to using the high-end products for this maintenance plan and operational pattern. Conversely, the typical quality baseline products presented no additional risk of accelerated wear. ..... Significantly longer oil change intervals likely may have shown a statistical difference between the two lube/filter choices, but that was not part of the test protocol.
Take it for what it is worth......
for MOST people, buying "high end" oils is TRULY a waste of money.
Surprising Findings from Oil Analysis of Automotive Engines
David E. Newton, Carrier Corporation/UTC
http://www.machinerylubrication.com/Read/30383/engines-oil-analysis
Quote:
The vehicle went from a steady diet of a synthetic oil with a premium filter to a quality conventional oil with an off-the-shelf filter. The data shows that the average wear metals shifted less than a point after this change. All shifts were well within one standard deviation for each distinct metal.
Quote:
What can be surmised from these results is that there was no tangible benefit to using the high-end products for this maintenance plan and operational pattern. Conversely, the typical quality baseline products presented no additional risk of accelerated wear. ..... Significantly longer oil change intervals likely may have shown a statistical difference between the two lube/filter choices, but that was not part of the test protocol.
Take it for what it is worth......
for MOST people, buying "high end" oils is TRULY a waste of money.