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Old 02-20-2023, 06:06 PM   #16
getchapull
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Drives: 2019 ZL1 M6
Join Date: Aug 2018
Location: Republic of Texas
Posts: 163
The reason for the switch was for track usage. GM says you can use the 0w-40 for daily and track usage.

That's why I use 5w-30
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