Lancia Twin Cam engine

[Kev_marea]

This engine is from the 80s out of a Lancia Twin Cam, don't know the capacity...

After a complete drain and flush out of the cooling system would there be any harm in using Vauxhall GM pink coolant?

Corrode the head of the engine? I can't see it myself but I have to check...

EDIT:
Been reading about GM stuff on t'internet, GM stuff is called Dex Cool (pink) and has a bit of a reputation for the perceived damaging of engine gaskets, I have had my Vaux Corsa 9 years and before that Vaux Omega and Vaux Carlton, & never had any problems with GM coolant.

 

[Peter Pick-Up]

Use Selenia Paraflu UP coolant, 50% dilluted with destilled water, and you'll be fine.

http://www.flitalia.it/en/fl/index....ivello=1&idCanale=1&idCategoria=4&codPrd=1681

 

[s130]

Lancia / Fiat engines of the 80s have cast iron blocks and aluminium (not iron) heads.

In those days many other manufacturer engines used iron blocks and heads.

The Fiat Lubrificante Paraflu was designed specifically for iron and aluminium combinations. Also in the 80s there was no "pink long life" anti-freeze that was OK for both iron and aluminium set-ups.

These days in the Fiat range we still have extensive use of iron blocks and aluminium heads. All these engines now use "long life pink" anti-freeze.

So, in your case if you have drained an flushed your Lancia 80s engines then I would have no hesitation at using the modern long life pink antifreeze.

I'm due to change the antifreeze on our Strada Abarth 130TC 2.0L Fiat/Lancia engine still have stocks of Paraflu and lots of Long Life Pink. I'm seriously thinking to go Pink and lose the Paraflu. I can give a can or two (in mint condition) to a friend who is building a model motor museum which has all sorts of motoring memorabilia and product features.

 

[Peter Pick-Up]

Paraflu UP ( Ultra Protection) G12 is pink and long life.
It's the ONLY coolant Fiat/Alfa /Lancia use today, no matter what was in before. ( G11 green/blue coolant)
I use it even in ~35 yr old Alfa V-6 engines without problems.

( The blue/green Paraflu G11 is no longer made..)

 

[Kev_marea]

Ok, guys, thanks, I will go ahead with the GM,
Paraflu is too expensive for me.

GM is about £13 for 5 litres and you dilute it to 10 litres
But I got a 20 litre barrel of GM for about £25 which will make 40 litres.

 

[portland_bill]

The pink stuff has a longer life, but that is not its main reason for existence. Its chemical formula is quite different. It is sometimes labelled as OAT, (Organic Acid Technology - don't be afraid of the word acid).

It has been found that the pink stuff can give problems with the gaskets on older engines, so is not recommended for any vehicle not originally specified for it. So unless your engine has been recently rebuilt with all new gaskets, and the gasket supplier can confirm ok for OAT coolant, it would be best to keep with the ethylene glycol based (blue or yellow/green) stuff.

The older stuff has a service life of two years, after which the anti-corrosion additives will deteriorate. The OAT lasts longer, having a 3 year service life, but if mixed with the older stuff, should be changed at two years. So unless you can guarantee to have removed all traces of the original, don't keep it in longer than two years. If it hasn't leaked out by then.

Fiat garages will only use OAT coolant, because they only see newer cars.

 

[Peter Pick-Up]

Not completely true.
Fiat/Alfa/lancia/Iveco garages use it in all engines now.
Paraflu UP G12 pink coolant has proven to be a good choice, even for older cars, so not neccesairy rebuild with new gaskets engines.
As I mentioned before, I even use it in original Alfa V-6 Busso engines with good results, no leaking or so.
Just flush the system with clear water, that's all.
It's completely safe to go from Paraflu G11 (green/blue) to Paraflu UP G12 ( pink), but never change from G12 to G11...!
Btw, Paraflu UP has a service life of about 5 years, but in most engines, it will never be changed...
Can't speak for anything else, though, there are so many different types of coolant on the market today, I'm afraid. ( there's even waterless coolant....!!)