Dexcool coolant ?

[Blacklab467]

Go to FCPeuro.com and order some of this.This is what is guaranteed to be correct in your Volvo.

Volvo.jpg (49.97 KiB) Viewed 172 times

[MoVolvos]

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Again, per Scotty Kilmer and the other video I posted. If you stick to one type you should be fine but since HOAT is the latest just buy one that's concentrated and dilute with distill water. Don't worry about brand just whether it's a HOAT coolant. Also, don't let branding and or color be the focus of the coolant.

AAA - Engine Coolant 101 The Right Coolant for Your Vehicle
https://www.aaa.com/autorepair/articles ... ur-vehicle

What are the Different Types of Engine Coolant

Many modern automobiles require enhanced engine coolants to properly maintain the vehicle’s cooling system and protect the engine from damage. Today, automotive service providers use three basic types of engine coolant:

• IAT – Inorganic Additive Technology
For decades, this distinctive green-colored coolant protected cooling systems, but it is rarely used as factory fill in modern cars. One reason is the fast depletion rate of its additives, which means it has to be changed more frequently, usually every two years or 24,000 miles.

• OAT – Organic Acid Technology
Commonly required for vehicles manufactured by General Motors, and some other automakers, OAT coolants are not compatible with other types. Usually orange, yellow, red or purple, OAT coolants are typically changed every five years or 50,000 miles.

• HOAT – Hybrid Organic Acid Technology
Providing the benefits of both IAT and OAT coolants, HOAT coolants are primarily orange and yellow and are common in Chrysler and Ford vehicles. OAT coolants are typically changed every five years or 50,000 miles, although some automakers specify intervals as long as 10 years or 150,000 miles.

• Hybrid and Electric Vehicle Cooling Systems
Most hybrid and electric vehicles have a separate cooling system for the battery pack. Only coolants that meet the automakers’ specifications should be used in these systems.

In addition to the basic coolant types described above, each automaker has unique requirements for engine coolants. The product used should always meet the applicable specifications. This information is available in your owner’s manual, and a good service technician will always make sure that the coolant used meets factory requirements.

[abscate]

Go to FCPeuro.com and order some of this.This is what is guaranteed to be correct in your Volvo.
Volvo.jpg

And send back one jug every 30,000miles of50-50 mix, and use the other to top off cars until they reach the change point.

No way I’m letting any coolant in my cars stay for 100k or even 50k for that matter.

[amblerman]

All it says in the manual is use genuine volvo coolant. Which of these should I buy please?

https://www.oreillyauto.com/shop/b/oil- ... antifreeze

I always just bought the O'Reilly 50/50 universal.

If you are still looking for coolant and want to buy at O'Reilly's, then you could easily grab look at this chart and buy accordingly:
https://www.oreillyauto.com/cmsstatic/U ... _Chart.pdf. (Note this is a Zerex branded chart)

You'll see that they claim that G48 is what is applicable but I really don't think that Volvo spec'd that back in the 90s for our cars.
You'll also see that G05 isn't listed for Volvo at all even though I and many others run that in their volvo.
Both G05 and G48 are Hybrid Organic Acid Technology (HOAT) coolants with slightly different makeups and coloring (which has no affect on coolant itself)

Google G05 vs G48 for your reading enjoyment (conclusion I came to.. you could use either. )

Zerex G48 (Note this is a formulation that lists Volvo applicability on front and on back says Volvo 1991-2014)
https://www.oreillyauto.com/detail/c/ze ... antifreeze

I chose G05 about 5 years ago based on my reading on line and the fact that it was easy for me to get locally.

Also, if you want to learn about the different kinds of coolant, this is a nice overview:
https://www.valvolineglobal.com/en-eur/ ... r-coolant/

As an aside, you mentioned you ran some universal coolants. There are many coolants that claim to be universal or "for all vehicles".
Like: https://www.oreillyauto.com/detail/c/pe ... eeze&pos=8

If I was going to run that in my 1999 s70 (and I would if I didn't have access to G05) I would flush out all the existing coolant and start fresh with the universal . That's even if it's 100% compatible with the G05. In fact I think the G05 and the universal I linked to above would co-exist just fine.
With that said.. I'd do this because it's my vehicle and from what I've read, the downsides would be minimal or zero. But that's a decision I would be making and you'd have to do the same.