when I did my reply last night I was thinking you had a 617.952. but rereading your first post Iam thinking you are doing this on a 97 E300D. so Iam not familiar with your undercarriage shield.
none of rhe vehicle I have owned have had to wear a diaper
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but changing oil is all the same whether car, truck or heavy equipment. I`ve done it all. some just take more than others.
Charlie