[cnavarro]

Thanks for posting your test results. Everyone should invest in oil testing to know what's going on in their engines and how their choice of lubricant and other factors contribute to overall engine health.

I'll add something that probably hasn't been mentioned. Leaded gas causes added wear. It's an abrasive when suspended in the oil. I'd put doubt into the last test only showing trace fuel when other previous samples shows fuel contamination. Lead is a significant contributor to wear. There are numerous citations of the elimination of lead from fuel reducing wear in SAE papers from decades past. Try running unleaded race gas instead for a few oil changes and you'll probably see a reduction in wear.

And as you can see with your previous samples, even small variations in mileage make a difference in results - that can contribute to the differences you're seeing. Blackstone recommended a shorter interval and you went longer than even with the previous sample. We figure no more than 10 hours time on the oil when the car is tracked.

When you figure shorter drain intervals as recommended, the cost becomes a factor in the equation eventually and he results in the grand scheme of things are pretty close, all things considered.

Silicon is an anti-foaming agent; sodium is a detergent/dispersant, like magnesium, which both are much friendlier to the engine than calcium based products.

Temperature difference does not equate to wear. The increased temperature is as of a result of the Brad Penn not being friction modified, where Redline, like Royal Purple, are very friction modified (lots of moly).