^ I think as long as its OAT coolant it will be fine.

maccardo94
Cool cool. So il flush all the green out and refill with this red one. Anyone know if this will be sufficient, says its good for toyota engines

Thanks

Sent from my CPH1725 using Tapatalk

In the overall scheme of things how much do you value your MR2 coolant system? (And motor)
 
For the last 12 years in my sdub I have only ever used TOYOTA RED CONCENTRATE mixed 50/50 with distilled water.
Apart from zero cooling problems, replaced at 2 year intervals, it always comes out with zero sludge or sediment, and hardly any discoloration.
The Toyota red stuff doesn't cost much more than other premium brands anyway, so why not use it? 
 
As Tony says "formulated for the metals within the Mr2 system"
To be more specific: Apart from the alloy head and cast iron block, that means especially the copper radiator, and copper heater pipes, etc.
 
One thing to know!! Be careful with pre-mixed.
Toyota also sell a PINK PRE-MIX but if you put that in it will ruin your original copper components.
 (I think it is designed for the later models that have aluminum radiators) 

So on the weekend i jacked the rear up. And flushed the system till it ran clear through the radiator bung. I refilled with the front clear hoses all conected but still had a bit of green coolant coming through when i refilled with red?l Is all the green thats still in there from the resoviour. I obviosuly havnt flushed it right. So im going to flush it all out again

What can i do to ensure all the green coolant is out. Should i flush it with all the drains opened aswell as the hoses attached?

Hope someone can shed some light

Thanks

Sent from my CPH1725 using Tapatalk

Read the bgb, if you don’t have a copy download it.
The bgb will point out the drain points in the hardliners under the car, the engine drain point (from memory), and the radiator.
If you have green in your system, remember also clean out the overflow bottle in the engine bay. Full flush is required - fill system with distilled water, run vehicle, and flush/drain system at all drain points (as per bgb). You can use a compressor blow tool (with wet cloth to seal at tool point) at the various points to help blow remaining water out (though 99% will drain out). Then fill with Toyota Red Coolant, ensure full bleed as per bgb.
If you use anything other than Toyota Red - if you are skipping steps - you are creating a receipt for disaster. If you don’t want to take onboard advice from the manufacturer, those with experience, let me know and I won’t respond with the same advice again and again.

Awesome. Yes i think alot of it is from the overflow and engine. Il release all the plugs next time including engine drain. Ive seen the only way to get the coolant out is to syphone it out? Is there a better way, or is this the only

This is my first time doing it on the mr2 so once i have it down future flushes should be fine.

Sent from my CPH1725 using Tapatalk

TonyMR2

If you used anything other than Toyota Red - if you are skipping steps - you are creating a receipt for disaster and let us all know to ignore your requests for information.

Maybe a little bit harsh there, I don't think its necessary to ignore you if you don't use Toyota red...
 
But like Tony has pointed out the BGB, it gives step by step instruction how to do what you ask. Bleeding the system takes a bit of time and a bit more patience, but do it right and you should avoid problems.

Apologies, edited - not all will ignore just me. Sadly, seen many of those with extensive knowledge turned off from the forums because of enthusiasts not following advice given again and again and cutting corners.

Harsh. Good old days before today’s sensitivity and stupidity, mechanic would clip an enthusiast over the back of the head and calling him straight for cutting corners from advice provided, done in an effort to protect him from costly aspects in the future.

Choice of product, process of service and consequence is all yours.

  A clip around the 'earhole would suffice!
 
Those damn kids will stop meddlin' one day (usually when they get a bit older and go, "Oh right, thats what they were going on about")
 
https://youtu.be/hXUqwuzcGeU [tube]https://youtu.be/hXUqwuzcGeU[/tube]
 
 
I was too silly too see the wisdom in OAT coolant, but have since learned. Forums will come back as the better place to share knowledge, that facebook thing will fade away. (I hope)

maccardo94
Awesome. Yes i think alot of it is from the overflow and engine. Il release all the plugs next time including engine drain. Ive seen the only way to get the coolant out is to syphone it out? Is there a better way, or is this the only

This is my first time doing it on the mr2 so once i have it down future flushes should be fine.

Sent from my CPH1725 using Tapatalk

You should only need to siphon out the overflow bottle.
 
Also check out the coolant drain/flush article in the tech article section of this forum.
It may help you to understand the SW20 coolant system, and why some people have problems with it.



 
 



 

Yeh i mean no disrespect to the more knowledgable haha i wana do this right as much as the next guy. Everyone on these mr2 forums are always awesome with responses and always very helpful. Id like to stay on the forums and not seem like a tard at the same time. The more i learn properly the better

Sent from my CPH1725 using Tapatalk