2015 Toyota Tundra with non Flex Fuel engine. Every 10,000 miles per manual.
yep.
Still amazes me that the big 5.7 V8 rolls on 0-20 oil.
Truly, love my Tundra.
Lots of people use an oil with a higher viscosity than is necessary and too high to properly lubricate.
The issue is proper lubrication at start-up which the lower vis allows. The higher vis in say a 10W-40 adds little to operating protection and detracts from start-up protection.