While we are on the Amsoil topic, I think I'm going to switch to it on my next change, it is more availible in my area. Delvac one is impossible to find. What type of Amsoil do you use in your MB? I would like to use a 15w-40 or 50 in the summer and a 5w-40 or 50 in the winter. Do they have these weights?

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200