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coolant change 

 

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 Post subject: coolant change
Posted: Wed Nov 03, 2010 7:49 pm 
Stock as a Rock
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Ride: 1999 au series 1

Location: sydney
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hi guys!
i will be buying all of my radiator hoses & thermostat this week and am planning on doing the flush and change on the au maybe saturday!!
unfortunately i have misplaced my owners manual ?
can someone tell me the water to coolant ratio for NULON 100% LONG LIFE CONCENTRATED COOLANT.
the bottle says standard ratio is 5ltrs coolant to 10 ltrs of water.
or do i go the 50/50 mix!!!!!!
thanks pete. :shock:
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 Post subject: Re: coolant change
Posted: Wed Nov 03, 2010 7:56 pm 
Getting Side Ways
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Ride: EA SVO, AU2 Forte

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i always go 50/50

 

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 Post subject: Re: coolant change
Posted: Wed Nov 03, 2010 7:59 pm 
Getting Side Ways
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WILDEB wrote:
i always go 50/50


you dont over mix coolant..... it can have negative effects

afaik theres nearly 15L capacity inc the heater, so mix the coolant accordingly
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 Post subject: Re: coolant change
Posted: Wed Nov 03, 2010 8:00 pm 
Getting Side Ways
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Ride: EA SVO, AU2 Forte

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i thought it was only 10L well i've been doin like 33% then

 

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Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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 Post subject: Re: coolant change
Posted: Wed Nov 03, 2010 8:05 pm 
Stock as a Rock
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Age: 107

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Ride: 1999 au series 1

Location: sydney
NSW, Australia

WILDEB wrote:
i thought it was only 10L well i've been doin like 33% then

thats another good question!
when draining the cooling system out if there is a 15 ltr water capacity! how come i can only get about 10 or so litres app/ out of the bastard when i drain it!
how do you get the entire amount of water out of the engine and heater system.
and should i pre mix the coolant in a 15 ltr container before adding so i know i have the correct ratio.
pete. :shock:
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 Post subject: Re: coolant change
Posted: Wed Nov 03, 2010 9:57 pm 
Getting Side Ways
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Ride: E39 523i / EF Fairmont

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peetys here wrote:
WILDEB wrote:
i thought it was only 10L well i've been doin like 33% then

thats another good question!
when draining the cooling system out if there is a 15 ltr water capacity! how come i can only get about 10 or so litres app/ out of the bastard when i drain it!
how do you get the entire amount of water out of the engine and heater system.
and should i pre mix the coolant in a 15 ltr container before adding so i know i have the correct ratio.
pete. :shock:


Haha, I've always wondered the same thing.

I've always done 5Ls of coolant to 10Ls of good water. Probably more like 6 or so litres seeing as the old stuff never really is completely drained.

 

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 Post subject: Re: coolant change
Posted: Wed Nov 03, 2010 10:22 pm 
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33% coolant:66% distilled water is the go. There's a limit to how much glycol should be in the mix. I found this previous thread that might be of use.

post1027550.html#p1027550

If you really want to get more coolant out, you can disconnect the heater tap below the BBM.

 

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