Coolant Turned To Brownish Colour

[601Turbz]

It ain't gonna hurt changing the coolant to quality one from any local supercheap auto or repco. The factory coolant is cheap and a weak solution that does turn brown. Why not change it to something that will be far better in summer that will last. only takes 10 minutes for a full flush and refill. Personally I wouldn't use anything less than a Tectalloy 90plus. 5ltr for $20.

***You will require at least 6 Litres***

Edited 13/08/12 07:07 AM by 601Turbz

[Ralph Wiggum]

It turns yellow because:

A: It's crap coolant

B: The blocks are sand cast and 10000k's seems to be just about enough time to wash the residual sand particles out of the cooling system.

Also +1 for Tectalloy 90+ for post mix or Castrol Radicool for Premixed

[cizzink11]

I bought my ute at 31--k's basically brand new, the coolant was a lush bright green. I have owned it for exactly a week today and its already starting to change color and it looks like a multi layered shot glass in the overfill tank.

Might try this so called Tectalloy 90+ this weekend with a full flush out. Can I do a quick flush with tap water? I really don't want to for the sake of rust in the pipes but would it be ok just to get the rest of the sh*t out?

[spinr33]

Hey mate is yours an auto or manual before anyone else jumps in ?

[Wenier]

What you on about with rust in the pipes, are you meaning because of running some water through it?

[601Turbz]

I bought my ute at 31--k's basically brand new, the coolant was a lush bright green. I have owned it for exactly a week today and its already starting to change color and it looks like a multi layered shot glass in the overfill tank.

Might try this so called Tectalloy 90+ this weekend with a full flush out. Can I do a quick flush with tap water? I really don't want to for the sake of rust in the pipes but would it be ok just to get the rest of the sh*t out?

No tap water! Use rain or demineralised and cycle it through and then flush it out. You're not ment to mix different types of coolants at all.

[bjc]

Isn't demineralised water supposed to be used only because it has a higher boiling temp? Every mechanic I have seen only use tap water for servicing!

[Wenier]

for flushing it out tap water probably would be fine, your not keeping it in there. Think the issue with it is whats added to it and can cause things like calcium buildup or something like that.

[601Turbz]

Isn't demineralised water supposed to be used only because it has a higher boiling temp? Every mechanic I have seen only use tap water for servicing!

I think it's to protect that aluminium radiators, as tap water contains all sorts of additves that can corrode over time. Demineralised water is free from these.

[bjc]

Yeah I've seen them stick the hose in to flush it out but they also just fill up from the same tap! I would have thought that the coolant itself is supposed to suppress all that corrosion, calcium etc from forming?

Either way the Demineralised water is cheap as chips from coles or woolies!!!