Thread: GM reccomends switching to 10W40??
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Old 05-26-2024, 03:21 PM   #25
FactoryMatt
 
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Drives: '22 2SS 1LE
Join Date: Nov 2023
Location: NorCal
Posts: 204
just run amsoil signature. so many mobil 1 threads here and on vette forums lol.
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