Is there a special socket to loosen the axle nut on the rear diff on a 1988 300E? I have read that you need to mark the nut before you loosen it. I have a 2 different torque wrenches. Should I use the one with the handle that flexes to show torque reading or can I use the one you set and it clicks?

Any other tips?

TIA,
Steve

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1997 E320
1990 Nissan 300ZX Twin Turbo (Stage X+)