A few things:
1. Data specific to the 2UZ by mileage. Blackstone provides universal averages. That includes brand new 2UZ and those with 500k. IMO, it's more valuable to know if any trends exist as a function of mileage.
2. Data from various oil weights and brands.
3. Data from the 2UZ in relation to change intervals.
4. Data from an imminent (sp?) failure. I would find it really interesting if we had reports prior to and/or during an engine failure.
5. Overall recommended change intervals.
6. Uncovering some other trend. I spend my day job pouring over measurement data sets. It's enjoyable to spend some of that mental horsepower exploring something that's a hobby and not industrial measurements for oil and gas.