I’ve been having some issues with the exhaust phaser on my 2016 Tacoma 2.7 so the timing cover came off. I was pleased to see how clean everything is minus a couple spots where some varnish has built up. Truck has 150k on it. Minus the first 20k where I’d buy fancy penzoil ultra platinum 0w20 it’s been getting a consistent Kirkland 5w30. Sorry dudes, 5w30 is the superior weight At 100k I ran a bottle of HPL flush w/kirkland, then ran an OCI of Redline 0w30. They say esters clean so that was my interpretation. My OCI has consistently been 5k give or take 500 miles. Needless to say I’m pretty happy about what I’m seeing. No before pics so I can’t say if my 100k “cleaning regimen” worked or not.