High Mileage CX-5s - report in

[ruthrj]

108k miles on a 2017 CX5.

Issues:
Cold start misfires/reduced performance.
Water pump worn bearings, was making a loud noise and was close to failure.
Serpentine belt worn/cracked. Tensioner leaking fluid.

Fix:
Carbon cleaning. Runs like new.
Replaced water pump.
New belt and tensioner.

The transmission does shift rough into 5th and sometimes slips on 3rd, but that was the previous owner's fault for not replacing the ATF at all for 100k miles.

Going to keep the ATF as it is, or do some drain and fills to see if it improves? Drain and fill could be risky later in a vehicles life (or so I’ve read), but was curious if you had tried any actions.

 

[Ven Zoah]

Going to keep the ATF as it is, or do some drain and fills to see if it improves? Drain and fill could be risky later in a vehicles life (or so I’ve read), but was curious if you had tried any actions.

I have done two drain and fills. The first one improved shifting. The second one made them worse. I figured I won't even try to drop the pan and replace the filter as that would remove even more metal particles in the fluid and affect friction.