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: Transaxle range (tr) switch adjustment
1. Disconnect the negative battery cable. 2. Remove the air cleaner component. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.) Caution Water or foreign objects entering the connector can cause a poor connection or corrosion. Be sure not to drop water or foreign objects on the connector w ...

Mazda 6 Service Manual: Technical data
ENGINE LUBRICATION SYSTEM Note The maintenance intervals on scheduled maintenance table (See SCHEDULED MAINTENANCE TABLE) can only be supported by the use of following oils. Recommended engine oil COOLING SYSTEM FUEL AND EMISSION CONTROL SYSTEMS ENGINE ELECTRICAL SYSTEM ...