I was unable to find the release for the radiator fluid on my 99 S80 2.9. Can anyone help me with this, or do i need to pay to have it pumped and flushed by a professional?

Also, how difficult is it to change the brake fluid, and tranny fluid? I'm getting ready to sell my car and need to changed these fluids (radiator because my engine is overheating slightly).

 

If you look underneath on the drivers side you will see a round hole in the plastic cover.Up in there is the radiator drain.You will need a deep 13mm socket to loosen it and drain the fluid.Also make sure you remove the resivior cap to drain it.

The brake fluid can be done buy removing the fluid from the resivior and adding new then bleeding the brakes.

The easiest way to do the trans is to remove one of the cooler lines from the radiator and hook up a clear hose and put it out slowly and fill it back up at the same time.Once you have the hose hooked up start the car and when you see bubbles coming out of the hose turn it off and add 3 quarts then do it again till it looks clean.

Note:Forgot to tell you once you fill the coolant up drive it atleast 6 miles to purge the system and then top it off.

 

I'm a little ambiguous about the trans....what do you mean when you refer to using the radiator hose to drain out the fluid, while filling it at the same time?

 

There is transcooler hoses that go into the radiator.If you remove one and pump it into a bucket and fill it back up you will flush the trans.

Tomorrow I will see if I can find it someone had posted a link that explained how to flush it properly using that method.

 

Here is what I have found searching this forum.
https://volvoforums.com/m_2623/mpage...sh/tm.htm#2626
https://volvoforums.com/m_5126/mpage...sh/tm.htm#5135

I couldn't find the exact link I wanted to but these should help.
If you need more help let me know.