Oil temperatures

[keesue]

Originally Posted by yaris-me

Wouldn't gas mileage increase be a better indicator of efficiency? If you google, you'll probably find some studies or anecdotal stuff.

Yes, gas mileage is a good indicator, but I am more interested in the operating temps of oil in the Yaris engine; primarily the difference between 'dyno' oil and the various types of synthetic oils. I have data on other engines but in larger displacements., but, I'm more interested in the Yaris. I found it interesting that there wasn't a drop in op temp using Royal Purple.

I'd like to get more anecdotal data from Yaris drivers who have oil temp guages, and better yet, if they noticed a difference when switching to synthetic oil.