W123 Aux fan AC mod & Evaporator cleaning (Cheap/Free ways to get better AC)

The AC on our older Mercedes always feel a bit inadequate when compared to a newer vehicle.
I'm slowly tinkering and learning about the system and some of its weak points so I can teach you ways to improve the AC as cheaply as possible!

I'm expecting some viewer to chime in and suggest using R12, and while that is one way to improve the performance, it is getting more and more difficult to obtain R12, and should you ever have a TXV fail or other components, all the new parts being made for these older cars are no longer designed for R12, so performance will suffer.

Key points in video:
0:00 Introduction
0:50 Aux fan relay mod explanation
1:44 Remove ice cube relay cover
2:15 Prepare the relay
2:44 How to attach wires
3:48 Mod Finished
4:10 Explanation of cleaning evaporator coil
5:30 Removal of Kickpanel and Blower fan
6:34 Lube blower motor bearing before reinstalling
6:53 How to reach the evap to clean
7:12 Before pictures of dirt and grime on my evap
8:18 Spraying evap cleaner through extension hose stuff
9:08 George comes to help
9:22 Rinse evap with garden hose (not full power or you'll soak the carpet)
10:18 After picture of clean evap
10:50 Idling in the sun with hot engine 48.4F vent temp

Affiliate links to purchase the items used in this video: (I may earn a small commission for referring you to these items, it costs you nothing, and helps me keep doing these videos!)
➡Relay: https://amzn.to/3mXMIUo (Get the 30A 4pin SPST)
➡Evap brush: https://amzn.to/36gwu30
➡Frost king Evap cleaner: https://amzn.to/30iWF5g
➡2mm ID Tubing you can use to extend the evap cleaner straw: https://amzn.to/2UmoVUJ
➡Lutz 6 in 1 Screwdriver: https://amzn.to/3icLe4Y (I used a Kobalt from lowes, but any 6 in 1 works, and the lutz are super nice)