I have used MMO for decades. a couple onces in the fuel tank at fill up and about 5 oz in the crankcase. I had lifter noise when my 2000 silverado was new. leakdown of lifters at cold start. well now at 140,ooomi engine is quiet with no noises. this is also with using mobil 1 5-30wt oil. pure one oil filters also work great. cut them open and you will see a good filtration media. wix also !
your engine from reports of others has a oil sludge issue . you have to be careful on your oil change intervals and change the oil only when hot and allow time for a full drain , likke a 30 minute time period.
I never throw sensors away when the replacing causes no effect. these can be used later to troubleshoot.