Maintenance at 39,000 Miles – Subaru XV Crosstrek 2 2019

Hello,

I have a car maintenance appointment scheduled for January 2024 (39k mile mark), and during my last appointment, I received recommendations for the following services:

1. Engine Steam Clean
2. Complete Fuel System
3. Mass Air Flow Clean
4. HVAC Air Treatment
5. Front Diff. Service
6. Rear Diff. Service

Could you please clarify which of the above services are essential and which ones are considered ‘nice to have’? Thank you!

Brand: Subaru
Model: XV Crosstrek
Year: 2019
Engine: 2