Is it normal for Oil Cooler Coolant hoses to have a slight bulge in them?

[OldAudiA4]

Is it normal for Oil Cooler Coolant hoses to have a slight bulge in them coming off the oil cooler? Similar to the pic below

[xtbinfernos]

It may not be normal but if it's not causing leaks or it's not cracked it shouldn't be much of a problem


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[Davdraco1]

It's old and about to go. May wanna get that fixed before it goes while your driving.

[ActiveMonkey]

I've always gone with this saying and its helped me never have a hose pop on me.

"When in doubt swap it out"

[bwizard]

Get it hot wear ppe push on the bulge with an ink pin the sharp end if it pops it needs replaced. Just kidding just replace it it's about to blow.

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[dalazybastard]

I'm dying. Seriously, don't forget PPE.


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[OldAudiA4]

Thanks for the replies. Does a shitload of coolant spill out when you pull these hoses off? As in do you have to drain the whole coolant system before replacing these hoses?

[kwnk]

Yes a bunch of coolant will spill out if you remove those hoses. I dont think they can be clamped off either since one of them connects to the upper hard pipe

[dalazybastard]

The oil cooler is an water to oil system, so yes a bunch of coolant will spill out.

You could remove all of it beforehand or just do the job(losing however much you lose) and do a coolant flush(with distilled water) after.

Regardless after either job top off with g12 and distilled water to make 50:50 mix or whatever you desire.


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[OldAudiA4]

Does anyone know approx. how many litres come out disconnecting these hoses?

[walky_talky20]

Approximately all of the liters.

[Cgoon009]

Does anyone know approx. how many litres come out disconnecting these hoses?

You should plan to drain and bleed the system, while your there, you may as well flush and add all new coolant. Now would also be a great time to examine any other hoses, areas of leaks, sensors, etc. that may be about go as well. If the coolant was recently replaced, then save it, but be sure to filter it so nothing other then coolant makes it back into your system.