Mazda 6 Service Manual: No.20 noise occurs at idle when vehicle is stopped in all positions/ranges

No.19 excessive shift shock on torque converter clutch (tcc)

No.21 noise occurs at idle when vehicle is stopped in d, s, l ranges, or in r position

Other materials:

Mazda 6 Service Manual: General procedures
PRECAUTION (BRAKES) Wheels and Tires Removal/Installation 1. The removal and installation procedures for the wheels and tires are not mentioned in this section. When a wheel is removed, tighten it to 88-118 N·m {9.0-12.0 kgf·m, 65.0-87.0 ft·lbf}. Brake Lines Disconnection/Connection Cautio ...

Mazda 6 Service Manual: Towing hooks
Caution The towing hooks should be used only in an emergency (to get the vehicle out of a ditch or a snow bank, for example). When using the towing hooks, always pull the cable or chain in a straight direction with respect to the hook. Apply no sideways force. FRONT 1. Remove the tow ...