2017 GM 5.3 (37k) thats supposed to have 0w20. Noticed this past weekend a tapping noise on cold start up. 5k since last oil change and OLM reading 25%. Changed oil today using what I had on hand. 5 qts Valvoline Advanced 0w20 and 3 qts Quaker State Ultimate Durability 5w30. PF63E oil filter. Interested to see if this "blend" may make it less noisy. It's already in the low 90s here so probably would have been better off with a full 8 qts of 5w30. We'll see.
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