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hello guys well i recently started hearing a ticking noise on my 07 sierra 4.8 162k miles

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so on start ups usually when its cold it ticks also when i rev it cold the ticking noise increases and decreases as the rpms goes down but once it warms up and i drive it for a couple mins ticking noise goes away and engine is quiet and smooth what should i do friends have told me to put marvel mystery oil? should i do that

Edited by 4.8vortecsierra07
miss spelled a word
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