DIY Coolant Flush pics?

**quattroSD** · 06-30-2008 03:42 PM

Hey all.
Want to do a coolant flush on my B5 S4. Couldn't find any DIY's with pics on other threads, so if anyone has any, I would appreciate it.

Thanks.

**BurnAll4S4** · 06-30-2008 04:18 PM

drain, fill with flush fluid, run to operating tempeture, drain, fill back up and bleed system

why do you need a DIY?

**2kblacks4** · 07-03-2008 07:10 AM

short list:

remove belly pan

pop off coolant line on passenger side bottom and let it drain- remember the clip.

pour water through system follow XJinCT advice in the matter.

reattach everything fill with g12 and distilled water.

**Reich** · 07-03-2008 07:58 AM

You have three kind of coolant. oat, ioat and hoat. S4 comes with organic (oat) coolant which is red or orange. Don't put inorganic (iat) in your engine b/c it is not realiable coolant. The color of that coolant is green or blue. i'm gona put hybrid in mine (hoat). Hybrid is not as hard as oat on rubber and gaskets, and is almost as good. BTW, you can mix hoat in both kind of coolant. Hybrid color is usually clear.

**quattroSD** · 07-03-2008 11:30 AM

Originally Posted by XJinCT

drain, fill with flush fluid, run to operating tempeture, drain, fill back up and bleed system

why do you need a DIY?

with pics would be cool...

**Slow4** · 07-05-2008 07:24 PM

I just did mine today via the bentley manual. That was harder than expected...had fluid explode all over me when I took off the clasp to the coolant temp sensor thingy (where radiator leads to engine).

BTW, its hard to take pictures when what you have to pull is literally all up in the frontend of the engine.

**tike0rz** · 07-09-2008 07:35 AM

How necessary is this? I've got 145k miles, and I sit in traffic often when the needle rises just a bit after halfway...would this help?

**Slow4** · 07-09-2008 04:44 PM

Originally Posted by tike0rz

How necessary is this? I've got 145k miles, and I sit in traffic often when the needle rises just a bit after halfway...would this help?

Not sure how helpful it is.

I haven't really noticed much of a change in my engine temperature, although there is a slight notice in my oil temp. It now goes up to ~200-~225 a little slower than it use to.