Use a pipe on the 4LW for extra leverage. I ordered one online at Homedepot.com and had it shipped to store for pickup. It is very small. Here it is next to my 5" pipe wrench which has saved my butt many times.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked