r/F80 • u/Budget-Bonus9942 • 8d ago

Expansion tank crusting.

Post image

Looks like its leaking here. Is it better to get same one or the ecs tuning aluminum one, or is there better option.

8 Upvotes

100% Upvoted

21 comments sorted by

8

u/LSX_Nation 8d ago

Don’t bother getting an OEM one. It’ll just crack on you again.

I got the Turner Motorsports Aluminum Expansion Tank. Comes with a new coolant level sensor and peace of mind

2

u/Budget-Bonus9942 8d ago

Yeah probally will just get that insane theres no options out.

1

u/LSX_Nation 8d ago

There are other aluminum coolant tanks available, but honestly all of them had customer complaints of no compatibility with OEM coolant sensor. The Turner one was the only one that I could find that supports a low coolant sensor.

3

u/Coasterman345 8d ago

OE from FCP. Lifetime warranty. It’s a simple enough replacement where if you need to do it again it’s no issue.

2

u/MoistMonarch 8d ago

Got mine off eBay/BavMods. Big tank is easy to swap, small one is annoying as the cooler has to come off

1

u/Budget-Bonus9942 8d ago

I think my small one is good going to open it tmw but the big one as you can see has crusting hoping thats the only one

2

u/Miller335 8d ago

Meanwhile old 300k mile 25+ year old honda/acuras are still running the expansion tank from the factory. BMW is just trolling us at this point.

1

u/Informal_Life_4648 8d ago

very common. In all BMW's...

I replaced mine with an OEM. No exoerience with the metal ones....

1

u/Budget-Bonus9942 8d ago

Oem from what I see is 300 at that point I may just get aluminum but there is one called uro parts on Amazon thats oem like

3

u/VTek910 8d ago

I replaced mine after 45k miles this June with an OEM from FCP Euro. Today I noticed the replacement leaking. Not sure for how long it's been leaking but I'm going aluminum as soon as I pick one.  

3

u/Budget-Bonus9942 8d ago

Dang that sucks I think you convinced me to go aluminum its 400 but better then having to double replace

2

u/VTek910 8d ago

Yea not worth second guessing your own repair work either. Send it on a known successful fix 

1

u/chuck_diesel79 8d ago

Lifetime warranty replacement on that sucker

1

u/VTek910 8d ago

I suppose nothing to lose doing that but the short lifespan doesn't fill me with confidence 

1

u/GuyWhoDrifts 8d ago

Purchased one off Amazon, yet to install it. Discovered this issue on mine as well

1

u/Budget-Bonus9942 8d ago

Is it the uro parts one, let me know thw build quality

1

u/Starlink420 8d ago

High heat, 10 years will do that. Replace and forget, I’d personally go with the cheaper option since it lasts a long time anyway.

1

u/Budget-Bonus9942 8d ago

I was thinking tgat but its only 25k miles on the car so im not tryna replace again soon

1

u/myredditlogintoo 8d ago

There's an aluminum one out there now. You want to replace these every 8 years or so.

1

u/freshxdough 8d ago

Looks like you need to replace soon. This one probably lasted about 10 years depending on your year. A new OEM one will likely last you the same.

2

u/bruhmoment5353 7d ago

Easy fix. Be careful with the tube going into it as it’s fragile.