So, I've had my 2022 (2021 year end roll over model) Silverado w/ 6.2L since early February 2022. I just now did my 1st oil change at 6650 miles.
What I noticed:
It's starting to get a little more chilly from fall weather, and before changing the oil I could hear a little valvetrain chatter on startup. Even after the oil was at operating temperature, I could still hear audible valvetrain chatter. The sound is eerily similar to that of rocker arms needing adjusted for valve lash. Given this is all stock, this should not be the case unless some form of valvetrain work just took place.
So, I brushed it off as just good ol fashion valvetrain chatter and nothing more.
I changed my oil, just standard Mobile 1 Full Synth 0w-20 and OEM ACDelco PF63 filter.
I've noticed almost immediately after the oil change, that the valvetrain chatter is damn near absent?! This seems very concerning. 0w-20 should 'theoretically' stand the weather of time like 0w-30 or 5w-30 but w/ a lower temperature vicus rating and a thickness of 20 at operating temperature. Sure, with tighter tolerances, this should be just fine. Except the reason for 0w-20 instead of 0w-30 or 5w-30 is a thinner oil for better fuel economy.
I installed a JTL Oil Catch Can within the first 500 miles, and I've had to empty it about 3 times within those first 6650 miles. Especially after having seen a video showing some oiling differences and at the end, what happens when fuel (unburnt blowby that gets past the piston rings, and reason we get the Oil Catch Cans) gets into the oil and how little protection you get.
Bottom line:
I'm concerned about going long intervals on oil changes with 0w-20 like I did with my 2016 Canyon using 5w-30 on the 3.6L. I think I might start changing my oil at 5000 miles regardless of how much life the system says the oil is still good for. This, all because the oil seems to be thinning out to a unsafe point that I can start to hear some valvetrain chatter due to the thinning viscus nature of the 0w-20 'fuel efficient' oil that GM has chosen to use.
Also, I don't race the truck, I drive rather conservatively, especially having achieved a 50 mile best of 26.3mpg.
What I noticed:
It's starting to get a little more chilly from fall weather, and before changing the oil I could hear a little valvetrain chatter on startup. Even after the oil was at operating temperature, I could still hear audible valvetrain chatter. The sound is eerily similar to that of rocker arms needing adjusted for valve lash. Given this is all stock, this should not be the case unless some form of valvetrain work just took place.
So, I brushed it off as just good ol fashion valvetrain chatter and nothing more.
I changed my oil, just standard Mobile 1 Full Synth 0w-20 and OEM ACDelco PF63 filter.
I've noticed almost immediately after the oil change, that the valvetrain chatter is damn near absent?! This seems very concerning. 0w-20 should 'theoretically' stand the weather of time like 0w-30 or 5w-30 but w/ a lower temperature vicus rating and a thickness of 20 at operating temperature. Sure, with tighter tolerances, this should be just fine. Except the reason for 0w-20 instead of 0w-30 or 5w-30 is a thinner oil for better fuel economy.
I installed a JTL Oil Catch Can within the first 500 miles, and I've had to empty it about 3 times within those first 6650 miles. Especially after having seen a video showing some oiling differences and at the end, what happens when fuel (unburnt blowby that gets past the piston rings, and reason we get the Oil Catch Cans) gets into the oil and how little protection you get.
Bottom line:
I'm concerned about going long intervals on oil changes with 0w-20 like I did with my 2016 Canyon using 5w-30 on the 3.6L. I think I might start changing my oil at 5000 miles regardless of how much life the system says the oil is still good for. This, all because the oil seems to be thinning out to a unsafe point that I can start to hear some valvetrain chatter due to the thinning viscus nature of the 0w-20 'fuel efficient' oil that GM has chosen to use.
Also, I don't race the truck, I drive rather conservatively, especially having achieved a 50 mile best of 26.3mpg.