Coolant

[JohnBu]

My plastic coolant overflow tank / reservior broke yesterday.

Fortunately ordered on a few months ago so I changed it using a torch last night.

One spring clip snapped when putting it back together and went awol. It could be still in the engine bay somewhere.

Anyway, I topped it up last night with water no bothering with this coolant rubbish.. :D

Adding coolant may a good idea.... does anyone know if Supercheap sells any red coolant that suits the Astra? i.e. Nulon or Tectaloy?

Or do I have to go to Holden?

I know that used my Holden coolant to top up a Toyota as it contained the same ingredient.

[Nurb608]

You should be able to get it from most auto places mate, I don't get mine from holden.

[JohnBu]

Nulon Red Long Life Concentrated Coolant suitable?

Thanks Rory.

CBF'd driving to Holden for a Litre of coolant.

[dutchy]

Nulon Red Long Life Concentrated Coolant suitable?

Thanks Rory.

CBF'd driving to Holden for a Litre of coolant.

that nulon will do.

[DirtyHarry]

have a look in the car manual and see if it specifies a holden/gm spec that the coolant must have. and then compare to what it says on the nulon bottle.
most likely it does
eg the nulon one meets the following specs
General Motors
GM 1825M
GM 6277M
GM 1899M


Nulon Red Long Life Concentrated Coolant suitable?

Thanks Rory.

CBF'd driving to Holden for a Litre of coolant.

[JohnBu]

Thanks guys

[dutchy]

have a look in the car manual and see if it specifies a holden/gm spec that the coolant must have. and then compare to what it says on the nulon bottle.
most likely it does
eg the nulon one meets the following specs
General Motors
GM 1825M
GM 6277M
GM 1899M

Got a bottle in front of me of the Nulon red long life 100% concentrated collant. Rear says; gm 1899 m , gm 1825 m and gm6277 m. which is mentioned in the book too.

[JohnBu]

Great..

it's gotta be better than that Mount Franklin variety.

I may pick up a 5L bottle.. will use it for the next coolant flush.

[Shay]

i no longer use a "coolant" at all

i use redline water wetter and distilled water, thats it.

after a fair bit of research i decided ethylene glycol is actually unnecessary and bad for australian conditions.

[JohnBu]

Shay,

Interesting theory, I understand why it may be unnecessary in most of Aust for the average car.. however, for a turbo car, I would say it's necessary, plus the fact in Melb we also go to the snow at times where water may freeze.

But why 'bad'?

[Shay]

glycol actually lowers the boiling point of water, and has less heat transfer capabilities than std water.

also because it is more viscous it is more prone to hot spotting, and put more load on you water pump.

IMO youd be better off running std water in a turbo car than coolant.

def agree with your comment about the cold tho.
if i knew there was any posibility of it freezing over night i would still run glycol.

read here if youre bored/interested
http://www.redlineoil.com.au/Uploads/Downloads/Techweb%20PRODSUMM%20WaterWetter%20Pink.pdf

testimonials (though i never trust them til ive researched more :p)
http://www.redlineoil.com.au/testimonials.asp?CategoryID=5

[Nurb608]

glycol actually lowers the boiling point of water

You sure?

[Shay]

You sure?

actually no, sorry doesnt lower boiling point, got that wrong.

but it does raise engine temps due to relatively poor heat transfer.

EDIT: however, adding a 50/50 mix of ethylene glycol and water (using the red which is close to 100% EG) only raises boiling point from 100 to 107 deg C

[Nurb608]

actually no, sorry doesnt lower boiling point, got that wrong.

but it does raise engine temps due to relatively poor heat transfer.

EDIT: however, adding a 50/50 mix of ethylene glycol and water (using the red which is close to 100% EG) only raises boiling point from 100 to 107 deg C

That's alright, thats what I thought ;)

Raises the boiling point but lowers the transfer.

[JohnBu]

Ended up getting 5l Nulon Red concentrate.

Bought the large so will have enough leftover for a flush and spare.

Supercheap were offering 10% trade discount cards to the public so also signed up.


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