Quote:
Originally Posted by LT4Greg
That’s why I haven’t switched to 0w40 in my 2017! It calls for 5w30 and that’s the oil I will put in while available even though GM has said that you can substitute 0w40 for 5w30 now.
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My '17 SS 1LE used 5W-30. I'm a believer in using the lightest weight oil recommended by the manufacturer. I just think the 0W-40 would be better in the summer down here in S. Florida where it can get extremely hot and humid.