This video needs to have 1 million views 🙌

Found this via your post on the forums - this is a great video, excellent timing and explanation. No background music? Awesome. Keep it up!

I do pretty much all my own work on my 16’ M3 and was actually thinking about the 60,000 miles on my coolant. This is excellent. Thx, Subbed.

Good, informative video. The vacuum fill tool, while a specialized tool, is actually not that expensive and is nice to have if you are an "intermediate" or higher level DIY mechanic. It is made by Schwaben and ECS Tuning sells it for ~$80. I have it and it works great. I have not used it on my F80 yet for either cooling system, but I have used it on my son's 128i with N52 engine twice. Makes the fill process seamless, with only one bleed cycle required to burp any residual air in the system.

Brilliant video, learned exactly what I've spent many hours trying to find out. Thank you.

Great explanation of the system, cheers, been searching for my M2 comp

Great video. Trying to understand the system and this is the best thing out there.

Got here from the f80 bimmerpost forum. Very good video. Thank you!.

Extremely interesting video. This answers a lot of questions I had. A question: do you know how the S55 cooling system relieves itself of pressure in case the expansion tanks are not enough? I don't see a pressure relief valve in the circuit, nor observing the radiator of the car in your coolant change video. I'm intrigued.

god tier video

Thank you for this video, extremely helpful!

Hey thanks man. BMW recently released cooling videos for their current Gxx model, so I went looking for the f8x series and yours came up

Very nice description. Thx

Amazing ! I look forward to the servicing as I will also attempt it after you on my austin yellow m4 😊. Btw can you also do a vid on how to service the differential oil?

Great video! Very well explained

great great video. May I know where did you get those pictures? Thanks so much!!

Thank you! Definitely valuable info!

This was really well done. Thanks. Went back and watched all your M3/M4 content. Any chance of you doing a DCT fluid change in the future?

Very interesting video I’m going to start following you 👍🏼 you should make a video when you change your spark plugs.

Great video dude, Thank you!

Great content

This is great video. Thanks for your support. Are you going to make more DIY for f82? How about spark plug?

Amazing Vid!

Hey thanks for the video. Very informative. Question: when filling up the expansion tank, do you put in the 50/50 mix of water coolant or just water? thanks!!

So does the heat exchanger pipe inside cabin located at driver side kick panel hot or cold sir?

Hi, Is it possible to provide some of the images you used in the video as a file or standalone image? Id like to have them saved to look at when working on my S55. Thanks. Great video.

I think my f80's electric fan shroud are broken. so I search ISTA and found how to replace. But I have to displace electric coolant pump hose, and bottom plate. and need special grease for does parts reconnect. Can I pull it out without drain and easy?

do you know how to access the auxiliary coolant pump on the intercooler side? thank you

Hello, great video but I am wondering what book/ guide you're referencing that has all these diagrams. Keep up with your awesome m4 videos!

Diagrams are awesome, is this out of a manual that can be purchased?

Why do you jack the front left and drain from the front left? Wouldn't that cause fluid to be trapped in the main radiator?

8:17 where is this pump number 9 installed?

I see an oily stain around the cap of the expansion tank behind the charge air cooler on the top of the engine. I unscrewed it, and re tighten it. Have not seen the stain/seepage since, should I order a new cap? What coolant do I use to top it off. Thanks for the video, it calmed my nerves brother 🙃

Hey I have a ? So we’re is the thermostat?🤔

Do you think that it might be possible to use a venturi valve to also take out all the coolant? I mean, the point would be not just to refill the coolant but also to take it out. What do think?

What document has these diagrams?

where did you find those diagrams?

so do they share the same coolant or are they completely separated systems?