mazbow

Hi guys
Can anyone tell me what coolant to use how much i will need and the best place to get it
Thanks

mazbow

Anyone?

alcazar

iTrader: (2)

LOL, not many folk on here after 10pm.

OK, depends on what car?

I'd go to a decent motor factor, (www.yell.com will find one), and ask for an antifreeze suitable for an alloy engine and with corrosion inhibitors.

Before refilling, dilute it 50/50.

If you are doing a full coolant change, the system holds 7 litres, but you'll be lucky to get more than five in, since it doesn't all come out.

and please: before refilling, read my post on "how to without airlocking", here: https://www.scoobynet.com/general-te...-question.html, or your next question is likely to be "how do I bleed the system?

And the answer to that one is, you can't...start again

The Rig

iTrader: (13)

Anything before around 2004 uses the blue or silicate version

After 2004 most cars use an OAT type , usually red or green

Do not use OAT in an earlier car

Do not use silicate in a later car

alcazar

iTrader: (2)

And DO NOT mix the two.

SmurfyBhoy

Why would a Bugeye and Later Blobeyes use different coolant ??

alcazar

iTrader: (2)

Just what they were built with...and you can't mix 'em.

Mazbow seems to have gone now?

SmurfyBhoy

Do you know why they changed it ?
You would assume if they changed it then one is better than the other.
If u could drain the full system and flush would it matter which one u used ?

Although it may have changed for environental reasons.

alcazar

iTrader: (2)

I think the OAT stuff is more modern, but am unsure if older engines can use it, maybe something to do with the flexible pipes? Gaskets? You'd need to ask an expert, of which, I'm told, I'm not...LOL

Ask one of the engine builders.

If your engine can use it, and IF you drained completely AND flushed it, it will be OK.

IMHO

mazbow

Lol Na I'm still here just been one of them days
Thanks for the replies guys it's much appreciated

mazbow

Now I've read this which should I use I'm picking up a newly rebuilt engine 3000 mile built by Paul finch it's got a v8 or v9 ej20 shortblock with cross drilled sti crank, rods and mahl forged pistons and v5 heads

mazbow

Well compered to what I know you are up there with them guys .... the last time I pulled and refitted a engine was 20 years ago and that was a old Ford anglia
When flushing do you just use clean water?

The Rig

iTrader: (13)

If your getting a version 8 or 9 engine that would use OAT antifreeze

If you used OAT in a pre 2004 car it foams up as itv reacts with the metals In older engines

mazbow

Ok cheers
So would the OAT be ok with the v5 heads then

SmurfyBhoy

This is what I cannot understand ? What changed in 2004 ???

What are the differences in the Engines of an early Newage say a 2002 Bug/2003Blobeye ? Non Widetrack

And a 2004/2005 Blobeye ? Widetrack

As far as i knew they all have same engine ?

I get that you should not mix the two types of coolant but if there are no differences in the engines why would there be a reaction.

If it were a case of classics and newage then it be more logical.

Be helpful if there was an " Expert " opinion on it.

My cars 2003 Blobeye had pink stuff in it, drained flushed and refilled with pink OAT, had no issues

alcazar

iTrader: (2)

Maz: I think I'd stick to the older stuff, and yes, flush with clean water.
Be aware that, if the system is on the car, some coolant remains. if you flush with CLEAN water, this remains too. It will mix with your anti-freeze, diluting it still further. A bit of simple maths will tell you what dilution to use to overcome this.

SB: Start a new thread asking that specific question. it looks like none of the self-styled experts are on this one. LOL

SmurfyBhoy

Guess it will remain a mystery

The Rig

iTrader: (13)

My cut off is around 2004 but some engines require OAT earlier , say 2003

It's the metal within the engine , yes the engines are the same design wise but not compound wise , you go putting OAT in a 95 Wrx and watch the antifreeze flow round the header tank frothing up ! Older engines have steel / alloy mix , newer engines don't do much hence they use OAT , OAT is designed to last longer , it's silicate free .

If you use silicate antifreeze in a modern engine it's like putting brake fluid in your washer bottles

SmurfyBhoy

Are you making a general comment on all engines pre/post 2003/4 ??
Or just the impreza ?

So you are telling me an early bugeye block 2000/2001 are made of a different compound to a later blobeye 2005 ??

Find this hard to believe ^^

Are you sure the switchover isnt classic and newage ??

krazy

They've always specified silicate, amine and nitrite free coolant.

If you really wanted the correct stuff then you'll have to get genuine coolant from subaru, honda or probably any of the japanese marques.

PedroFT

iTrader: (1)

Running 5L of supermarket Redex green + distilled water for more than 2 years, on a classic, no issues! (car takes about 6.5L)
I find these "theories" strange to say the least.