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: Reassembly
Standard values, such as torques and certain adjustments, must be strictly observed in the reassembly of all parts. If removed, these parts should be replaced with new ones: - Oil seals - Gaskets - O-rings - Lockwashers - Cotter pins - Nylon nuts Depen ...

Mazda 6 Service Manual: Transaxle oil inspection
1. Park the vehicle on level ground. 2. Remove the oil level plug and washer. 3. Verify that the oil is near the brim of the plug port. If the oil level is lower than the low level, add the specified amount and type of oil through the oil level plug hole. Specified oil grade API Ser ...