Done already, new compressor and filter 👍🏻 Check out my YouTube channel

https://youtu.be/UHBbLWZXw4A

Well I recon you must be about there then...

One thing to note if you have a tow bar, the lazy fitters remove a big grommet from the wheel well when they put the wiring through, well worth checking as a lot of water can get in on normal roads, let alone on the path least travelled......  Pete
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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

You seem to have it pretty much covered with your regular maintenance (some might say overkill, but who has ever caused a problem by changing oil frequently!).
You mention fluids, but does that include power steering fluids?

If you haven’t changed your plenum hoses, then maybe swapping them for some silicone ones? Fairly straight forward to do.

Maybe lanoguard the underside of the car as part of a clean and de-rust routine? Currently driving: 2012 L322 SE Overfinch 4.4 tdv8

Past rides:
2014 Audi Q7 3.0d (good riddance)
2010 L322 Autobiography 5.0 Supercharged
2011 L320 HSE 3.0 sdv6
2014 Jaguar XF-RS 5.0 supercharged
2007 BMW 535D
2005 Mini Cooper S

https://www.fullfatrr.com/forum/topic59478.html

2010BlackL322 wrote:

Thinking fuel injectors, pulley bearings, and viscous fan bearings, they are noisy, water hoses

I swapped my pulleys and belts to get rid of noises (chirps!) and replaced my alternator, water pump and AC compressor (its solenoid was playing up - delayed cold) while i was there, and would agree with others that doing the lot while there is best (if costly) due to the hassle in getting the access you need!

Frustratingly, despite new (genuine) everything the chirping has started again when cold I haven’t yet looked into what is making the noise yet. Currently driving: 2012 L322 SE Overfinch 4.4 tdv8

Past rides:
2014 Audi Q7 3.0d (good riddance)
2010 L322 Autobiography 5.0 Supercharged
2011 L320 HSE 3.0 sdv6
2014 Jaguar XF-RS 5.0 supercharged
2007 BMW 535D
2005 Mini Cooper S

https://www.fullfatrr.com/forum/topic59478.html

Chirping could be the bearings on your blower motor …

Injectors ?
Wasn’t aware there was a maintenance regime for them

He's got turbos, not a blower... Pete
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-