Channellocks and strap wrench were NG and I have a smallish pipe wrench I can try; bt my buddy Steve, all around heavy equipment mech , just got home and I know he has some big open end wrenches.
I am heading over there now to see what he's got.

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1981 240D 143k 4 spd manual -SOLD

2004 VW Jetta TDI 5 speed 300k -still driven daily