Green Silicate Antifreeze without added OAT technology

[Laird Scooby]

Originally Posted by 360beast

Not anymore it isn't, they've changed it so it's a hybrid OAT and are telling customers it is backwards compatible but it isn't.

Originally Posted by Laney760

Yes, thats what I've discovered.

I've discovered today that my previous green pure silicate one had been hybridised with OAT without my knowledge, any chance that that could have caused my minor head gasket fail or the failure of my header tank lower hose?

Originally Posted by jpliddy

go for genuine VOLVO COOLANT its only changed every 3 years i think so it works out cheap i think
only my opinion though .

Originally Posted by Ian21401

Agreed as above,

Jim and Ian, please read the quotes above yours in this post as it appears Volvo have hybridised their coolants so now the EG coolant with silicates now contains OAT as well. How they managed that without the silicates precipitating out into a gel i don't know as i'm not a chemist but equally worrying is that OAT coolants will do mare harm more quickly to cast iron components than EG coolant does to aluminium which is why the Japanese developed OAT coolant, to prolong the life of the aluminium engines they were building.

All red blocks have a cast iron block, it's aluminium on the OHC engines so EG is still better and then there are the gaskets to consider. The OAT stuff tends to eat gaskets on pre-2000 cars because they're not made to withstand the acid in the Organic Acid Technology (OAT) coolant.

[griston64]

Originally Posted by Laird Scooby

Jim and Ian, please read the quotes above yours in this post as it appears Volvo have hybridised their coolants so now the EG coolant with silicates now contains OAT as well. How they managed that without the silicates precipitating out into a gel i don't know as i'm not a chemist but equally worrying is that OAT coolants will do mare harm more quickly to cast iron components than EG coolant does to aluminium which is why the Japanese developed OAT coolant, to prolong the life of the aluminium engines they were building.

All red blocks have a cast iron block, it's aluminium on the OHC engines so EG is still better and then there are the gaskets to consider. The OAT stuff tends to eat gaskets on pre-2000 cars because they're not made to withstand the acid in the Organic Acid Technology (OAT) coolant.

I'm not 100% sure the Volvo coolant has OAT Dave. It looks to me like it has silicate based inhibitors similar to Comma G48. I'll need to go read the bottle I have in the garage to be certain

[Clan]

Originally Posted by Laney760

Hi

Does anyone know where I can buy reasonably priced concentrate not pre-mixed Green Silicate Antifreeze without added OAT technology?

I was getting it at a good price but now they all seem to have added OAT in with the silicate which is not what I want?

I know Volvos will sell it but it will cost an arm and a leg!

Why do people assume without checking that anything you buy from volvo will cost you a fortune? Parts for any car will cost a bit these days ... especially from places like Halfords
Volvo do have many reasonably priced items ..Get the volvo stuff you wont get a better product for the price ... 4 litres you need It wont need changing again .. great value , especially from here:

https://www.ebay.co.uk/itm/202456103...MAAOSwCtNbs0SL


Good luck 😊

[Laird Scooby]

Originally Posted by griston64

I'm not 100% sure the Volvo coolant has OAT Dave. It looks to me like it has silicate based inhibitors similar to Comma G48. I'll need to go read the bottle I have in the garage to be certain

I'm not 100% sure either Mark, as i said it appears Volvo have hybridised the coolant, based on what both Ellie and Luke said about it. I would certainly do my own "due diligence" of checking whatever antifreeze i bought from Volvo with that on my radar to make sure what i was buying did not contain OAT, even in hybridised form.
That said, i'd probably go for the Super Coldmaster, i'll work it out soon seeing as i have a couple of coolant leaks to sort, it'll only be in for 2-3 years tops anyway.

Originally Posted by Clan

Why do people assume without checking that anything you buy from volvo will cost you a fortune? Parts for any car will cost a bit these days ... especially from places like Halfords
Volvo do have many reasonably priced items ..Get the volvo stuff you wont get a better product for the price ... 4 litres you need It wont need changing again .. great value , especially from here:

https://www.ebay.co.uk/itm/202456103...MAAOSwCtNbs0SL


Good luck 😊

Usually because stuff from Volvo does cost in limb and/or organ proportions, that's why! The dizzy cap and rotor for mien work out about £80-90 from Volvo, bought NOS Bosch items on fleabay for about £40 for the pair.

I'd be very hesitant about buying that Volvo antifreeze you linked to because you can only see the front of the bottle - no chance of confirming exactly what is in the bottles.
Ethylene Glycol is an alcohol of a form and like most alcohols is hugroscopic, often turning acidic after a period of time (2-3 years usually) so i don't see how Volvo can offer a lifetime antifreeze. I'd certainly want to change it sooner than that, notwithstanding leaks, water pumps, thermostats and so on, for the simple reason that other contaimanants will build up in the system causing other problems, not to mention reducing the efficiency of the heater and radiator.
The corrosion inhibitors in it aren't a lifetime thing either because to inhibit corrosion, they must produce a chemical reaction. That is limited by the amount of inhibitor in the system as it will have a finite life depending on rate of reaction and other factors.

I have long suspected it's a marketing ploy on Volvos part so they can replace various other parts that have failed due to poor antifreeze because it's too old. Then they can charge for new antifreeze because they had to drain it and it was obviously contaminated.

In short, i'd rather change it every 2-3 years and know what i'm putting in will at least last that long and keep the various threads free, renew the 'stat and flush the system every other change and keep things as they should be than fill the system with a fluid that is allegedly filled for life and wonder/worry what's actually happening inside the engine. Volvo are the only manufacurer i know of that offer a so-called lifetime coolant/antifreeze, that suggests it's either not possible for other manufacturers to do the same or it would be too expensive. The price of the Volvo stuff you linked to is certainly in the ball-park of other antifreezes so what is Volvos magic ingredient? Do they even have one or is it as i think, a marketing ploy to destroy water pumps, thermostats and other cooling system components?

[360beast]

It was a post a few weeks back (maybe from Phil) who found out the coolant Volvo supplies is now a hybrid coolant.

They will have to get rid of the old stock first though so you might get lucky in that your local dealer has the original stuff on the shelf or you might be unlucky and they've only got the new "backwards compatible" stuff.

[Forrest]

There have been a number of posts on this and other forums over the years. Volvo actually made the change in 2015.

https://www.basf.com/global/en/media.../p-15-259.html

Prior to this, Volvo coolant was G48 and this remains recommended for Volvo trucks.

FWIW I have been using the new OEM Volvo coolant in my oldest, L-reg, 940 for a number of years without any apparent ill effect.

I did a flush/change on two of my cars this summer and plumped for OEM in my low-mileage 940 Celebration and Comma G48 in my 1997 V90. When I’ve used my stocks of Volvo OEM I shall probably stick with the G48 in future. I’m not mixing the two types.

Here’s the link to the thread when I was researching this earlier this year.

https://www.volvoforums.org.uk/showthread.php?t=318323