I know this isn't hard to do. I've done it on my other cars, but I can't locate the low port on my C280. I found the high port infront of the fan, that was easy. I was told it was under the headlight on the drivers side, but that was the radiator plug. I thought it was on top of the head, but I think it the fuel purge value, cuz gas came out. I'm lost, someone please help.

THanks.. '94 C280