In Reply to: Decision made. posted by Beth and Allen on January 05, 2018 at 10:17:54:
Already answered this. 5W-20 is what Mercs spec out from that era. My daughter has a 2002 sable and when I went on-line to find a downloadable Owner's Manual, I found several Mercs with that oil spec. What does the sticker on the radiator shroud or under the hood say? they put that info on stickers there too nowadays.