daryll40

I see you have a hybrid. Perhaps your data cannot be extrapolated to the non-hybrid. Because some of those miles are electrical. And accelerations, tough on normal engines, are electrically boosted

cdnewton

Here is a report from our RX330 with approx 160K.

This was Pennzoil High Mileage 5W30 (with one quart of Pennzoil Platinum) on a 5,000 mile run.

daryll40

Ok, I am approaching 5000 more miles (to a total of about 48000) and had another test of this next batch of Mobil1 0W-20. They are now saying "OK, run it to 6500 miles" which still doesn't do what I want (10,000). I think I am going to run till 6500 as suggested and try Toyota 0w-20 Synthetic and test that after 5000 miles on it.