[TylerShubert24]

How much coolant do I need buy to drain then fill back up N54 ?

[lookalikehuuh]

https://lmgtfy.com/?q=n54+coolant+capacity

answer: Approximate Engine coolant capacity: 6.2 liter / 6.6 U.S. qt / 5.5 imp. qt

[Moisture]

Never do a drain and fill on your coolant system. It's either you do a full flush or you just leave it alone entirely.

[mweisdorfer]

Originally Posted by TylerShubert24

How much coolant do I need buy to drain then fill back up N54 ?

2 gallons for sure

[TylerShubert24]

Okay thanks guys

[TheMidnightNarwhal]

Originally Posted by Moisture

Never do a drain and fill on your coolant system. It's either you do a full flush or you just leave it alone entirely.

What why lol.

[mainbearing]

A drain and refill is what I do. Mix with 50% distilled water.

[TylerShubert24]

Originally Posted by TheMidnightNarwhal

What why lol.

+1

[moneyposse]

just over 2 gallons I believe

[Moisture]

Originally Posted by TheMidnightNarwhal

What why lol.

I read somewhere on here a long time ago that it increases the changes of some sort of plastic bits inside the cooling system breaking free and clogging something, or something along those lines. I do not remember the details. But one user went to great lengths explaining why you should never drain/fill your coolant system.

Anyone might have some more info on this?

[Captain Buumer]

Originally Posted by Moisture

I read somewhere on here a long time ago that it increases the changes of some sort of plastic bits inside the cooling system breaking free and clogging something, or something along those lines. I do not remember the details. But one user went to great lengths explaining why you should never drain/fill your coolant system.

Anyone might have some more info on this?

I can find logic in that statement if you fill with some other color/type coolant. But then chemistry lesson begins where you gotta see if it reacts with plastic/metal used in that specific car.

Coolant may deteriorate plastic or even react with metals which it wouldn't if correct coolant is used.

He might have meant that fresh coolant may wash loose contamination that have settled in dirty coolant system.

[nsjames]

Originally Posted by Moisture

I read somewhere on here a long time ago that it increases the changes of some sort of plastic bits inside the cooling system breaking free and clogging something, or something along those lines. I do not remember the details. But one user went to great lengths explaining why you should never drain/fill your coolant system.

Anyone might have some more info on this?

that person was an idiot.

regularly draining and refilling the system with fresh coolant is how you keep electrolysis from happening in your cooling system.

it's literally part of the recommended maintenance.

[lookalikehuuh]

Originally Posted by nsjames

that person was an idiot.

regularly draining and refilling the system with fresh coolant is how you keep electrolysis from happening in your cooling system.

it's literally part of the recommended maintenance.

Yep I agree its what you should be doing on a regular basis, at least if you care about your car that is.