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Old 1 Week Ago   #1
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Talking Antifreeze Super Flush - Ensuring 50/50 mix

Hey Guys,

I have a1.4 GP TJET 2009. I am planing on doing a coolant super flush over the weekend where I plan to flush the system with distilled water until it runs clear and then refill with new 50/50 antifreeze. Now my questions are:

1) When it comes to final filling with 50/50 antifreeze, there is going to be some distilled water in the heater core / engine block - how do i ensure I have a correct ratio of 50/50 mix if say the engine / matrix still has 1,2,3 litres of distilled water in there?

2) I am planning on changing the thermostat also (preventative maintenance) would removing the thermostat solve my issues from the first and fully drain the engine block?

thanks again
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Old 1 Week Ago   #2
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

It will be fine, no cause for concern, any discrepancy will be negligible. If you really want to check, get yourself a tester.
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Old 1 Week Ago   #3
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

Quote Originally Posted by jimboy View Post
It will be fine, no cause for concern, any discrepancy will be negligible. If you really want to check, get yourself a tester.
Weighting the coolant was ok in the old time when we used glycol. As Fiat uses Paraflux since last century (even millenium !) I am not sure this method would be ok to check the water/additive ratio. Maybe they've a special densito-meter that is setup for Paraflux ... ?

Anyway, removing the lowest water pipe and the thermostat housing will drain almost everything out the engine, the little amount remaining can be neglected.


BRs, Bernie

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Last edited by Bernievarian; 1 Week Ago at 13:24.
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Old 1 Week Ago   #4
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

[QUOTE=Bernievarian;4497185]Weighting the coolant was ok in the old time when we used glycol. As Fiat uses Paraflux since last century (even millenium !) I am not sure this method would be ok to check the water/additive ratio. Maybe they've a special densito-meter that is setup for Paraflux ... ?

Anyway, removing the lowest water pipe and the thermostat housing will drain almost everything out the engine, the little amount remaining can be neglected.


BRs, Bernie

No mention of paraflax coolant, any oat stuff will be fine.... Mentioning the tester was tongue in cheek, aimed at being just a tad too serious, can't remember the last time I used one.
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Old 1 Week Ago   #5
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

To fully flush the system with distilled water will not only use a hell of a lot of water which depending where you get it can add up to a few quid, it’s also completely pointless as the system will have a lot of salts that have come out of the water, in parts of the engine that will not flush out, the salts will almost immediately recontaminate the distilled water and make the whole process pointless and expensive.

Literally all you need is some tap water mixed with coolant, drain it of, at most run a hose pipe backwards through the radiator to flush out any crud and keep it all clean and moving, the refill with 50/50 coolant water. My preferred coolant is pink.

If you try and drain the heater core you risk creating airlocks which are a total arse to sort out on the grande and can mean your cabin heating stops, well heating... not what you want as we start to head into winter.
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Old 1 Week Ago   #6
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

Up here we have very soft water, that's what I use, never had a problem, but each to their own.
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

don't have any real concern about using distilled water in the system can pick up 5Ltrs for £2.00 don't see that as too much for a few jugs.

I down want to disturb any added clips unless I need to. Will draining via the drain tap and removing thermostat do the same as removing lower radiator hose[quote=jimboy;4497210]
Quote Originally Posted by Bernievarian View Post
Weighting the coolant was ok in the old time when we used glycol. As Fiat uses Paraflux since last century (even millenium !) I am not sure this method would be ok to check the water/additive ratio. Maybe they've a special densito-meter that is setup for Paraflux ... ?

Anyway, removing the lowest water pipe and the thermostat housing will drain almost everything out the engine, the little amount remaining can be neglected.


BRs, Bernie

No mention of paraflax coolant, any oat stuff will be fine.... Mentioning the tester was tongue in cheek, aimed at being just a tad too serious, can't remember the last time I used one.
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Old 1 Week Ago   #8
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

Quote Originally Posted by everson38 View Post
don't have any real concern about using distilled water in the system can pick up 5Ltrs for £2.00 don't see that as too much for a few jugs.
I down want to disturb any added clips unless I need to. Will draining via the drain tap and removing thermostat do the same as removing lower radiator hoseSoon adds up when you’re literally pouring water through the car and down the drain. You’ll need a lot more than 5litres if you want to flush the system properly.

Hence why its far better to just flush it with a hose pipe
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

Aye, as said you'll need quite a lot of water, but seriously don't worry about that, you should make sure you bleed the system properly after, to get all the air out is not difficult but it can be a bit of a hit & miss, just when you think all the air is out, it's not.
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Old 6 Days Ago   #10
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

Be careful with the radiator drain plug,if i remember correctly they are plastic..

I changed the fluids in one,wish I'd of just undone the lower hose.
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Old 6 Days Ago   #11
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

Quote Originally Posted by nikrox View Post
Be careful with the radiator drain plug,if i remember correctly they are plastic..

I changed the fluids in one,wish I'd of just undone the lower hose.
Good advice from Nick, the plastic drain is very brittle indeed ...
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

Quote Originally Posted by Bernievarian View Post
Good advice from Nick, the plastic drain is very brittle indeed ...
That it is. I find in have to put a 12mm and slight hammer it on to get a grip to loosen it as I list of slight rounded with 13mm
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Old 5 Days Ago   #13
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

A LITTLE HELP... So things have been going well up until this point. I cannot get the upper rad hose quick connector off (see pic) also the hose clamps are fitted up side down and trying to prize open the clamp is near impossible from the angle of 180 degrees from looking over it. Does anyone have any ideas?Click image for larger version

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Old 5 Days Ago   #14
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

Is the current clamp gonna be reused?..Id got a flat bladded screwdriver in it and twisted to break it.
I used jubilee clips when I did mine.

I used a 12mm socket on the plastic drain plug...still broke it.
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Old 5 Days Ago   #15
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Re: Antifreeze Super Flush - Ensuring 50/50 mix

Aye, bin those clips, invest in stainless steel quality worm drive clips.
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