Owners manual oil consumption

I have a 2011 Gen 3 with ~200k on it, and a 2017 Prime with ~90k on it. I change the oil every six months on both vehicles. Once beyond the first 5k miles, I have never seen any loss of oil.

 

Isn’t that a mind blower? I’ve proposed here a few times, that gem should be prominent in the sales brochures.

Specifically with Gen 3, model year 2010 till partway through 2014, Toyota used what’s commonly referred to as “low tension” piston rings, rings with less outward spring, presumably to reduce friction, gain a tenth or two of a mpg.

There are a couple of service bulletins (test and fix, attached), for excessive oil consumption. In the test the criteria for excessive (bad enough to warrant a free fix) is (slightly more reasonable) one US quart per 1100~1300 miles. There’s another criteria, basically Toyotas ace in the hole: has to be under 60k miles on the odometer.

“Recently purchased with 175k” and “minor rough start” does not bode good. Yes you’ve cleaned EGR, hopefully completely, but 175k is long overdue. It may have a stop-leak product masking symptoms.