Do a search or look at the manual, depending on what the temps are where you live I would think either 10w-40 or 15w-50 would do it. I would stay away from the 0w-40 stuff unless it's below freezing. Also no 5,10w-30 in old MB engines.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200