My 03 just turned over 30k and I have a question regarding the coolant change procedure.

I know many have changed the coolant in their cars but I was wondering if anybody is using the Mitsu tool that is recommended for this or just doing a drain and refill?

Here's a pic from the manual showing the tool in use.

Thanks in advance,
Bob

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I drain the rad. Start the car and keep the hoes water running through the rad as the car heat cycles it will dump the remaining coolant in the system out.

I let it run clear than dry and refill with coolant. As it heat cycles itll pull coolant into the block . Just keep filling the rad and checking your temp gauge.

The Evo is alot easier to do than my old Teg. The Teg would get crazy air pockets and would be a PITA

 

Thanks for the tip. I know what you mean about the Integra and air pockets.

I had a Civic with a Type R swap and it was a pain to get all the air out of the motor.

 

The first thing I did when it was time to change coolant was to look for the block drain as shown in the manual. I found it and decided, at least for me, it was in an unreachable place. So, I just put water into the pressure cap opening until the water draining came out clear. I imagine this leaves some tap water in the block which probably isn't good for the radiator.

While doing this I tested the cap with my cap/radiator pressure tester. Well, the cap flunked bigtime. Since most people aren't going to have a pressure tester I suggest you change the cap every time you change coolant.

Other than that, I filled the system and ran the engine like it says in the manual. Then I also let it cool and filled it again like it says to do in the manual. I also removed the bottle, washed and refilled it.

So, no special tool was used here.

 

how do you keep the right coolant ratio when you are filling with the hose with the car on method?