F90 M5 Coolant Expansion Tank Replacement In Real Time 2018+ BMW M5

Replacing the expansion tank which is prone to leaking, on your 2018+ M5 is a simple repair that could save you hundreds doing it yourself.

[@rashadjefferson4817]

Being a dentist and hearing the conversation made this video priceless.

[@autolapse3693]

This video was made just for you 😂

[@rashadjefferson4817]

@@autolapse3693 it sure was, it will help me improve my patient care. 😂😂

[@user-kq8bz2nz1k]

Injectors contaminated with coolant.
Damage to and failure of injectors which were coated for a longer period with coolant.

[@mk718bx5]

Bro you did great. I wish BMW would recall the coolant tanks on the f90. I’ve only seen one aftermarket solution so far. Do you work for an independent shop or dealer?

[@autolapse3693]

Thanks man, im at a dealer. The RK billet tanks are big money and the catch pan they sell is effective but id rather just keep an eye on the tank and catch it early for the price of installing one yourself

[@williamcarvalho2869]

I agree!! They would never recall that then they lose money.

[@wuzumaki]

@@autolapse3693 Those aftermarket solutions cost a fortune. For example, the Level Performance Coolant Catch Pan is close to 700 dollars, which is like 4 times the price of an OEM expansion tank. So you're right, you're much better off just opening the hood once a month and check if you have a leak and have it replaced when needed. It took me 1,5 years of ownership and 14k miles before I got my first leak, so approx 250 dollars every 1,5 years if you have it replaced by a dealer.

[@williamcarvalho2869]

Bro great video!! Prior to starting this replacement, did you extract any coolant out of the expansion tank? I have a 2018 and want to install the coolant catch pan from 1level but it's pricey AF. Do you know if BMW made the expansion tanks better quality?

[@autolapse3693]

I did not extract coolant before replacement but that’s always a good idea to make things less messy. The last two I put in had minor revisions so I think they slightly updated the part with a drain tube that directs leaking coolant towards the back of the engine instead of onto the coils/injectors. But time will tell if they are still prone to failure

[@wuzumaki]

@@autolapse3693Do you have the part number to the revised coolant tank?

[@wuzumaki]

Did you have to unplug the battery when removing the cover of the DME, or is the cover just all plastic?

[@autolapse3693]

The DME cover is just a plastic cap that comes off straight up. No need to disconnect the battery for this repair

[@MergimMazreku]

Could you tell us what pliers you used those 3 red models to block the pipes?

[@autolapse3693]

a.co/d/9hYhhhZ

[@MergimMazreku]

@@autolapse3693 thank you, keep it going.

[@MergimMazreku]

Thanks to you, i changed my M5 coolant tank very carefully and very good, thank you very much sir.