German owner manual. The only information you get is: Use Honda Type 2 coolant, it is a mixture of 50% antifreze and 50% water. (German: 50% Frostschutzmittel und 50% Wasser)
Thats all the lousy, useless information we get here. No ASTM Number, no hint about silicate, nothing. Zero. Same for the orignal honda germany workshop manual, at least for my del Sol. Exact the same useless information as in the owner manual. If you ask a Honda dealer here, he shrugs. Thast why i ( HAVE TO ) rely on the recommendation of reputable coolant manufaturers.

 

Did not put oem in mine either i mixed it myself with deionized water though

edit At time of replacement engine and full drained rad.

 

You don't know what is in there now. Using the wrong coolant, or mixing coolants, can be very detrimental to engine.

Source some appropriate coolant. Making sure its silicate free, safe for aluminum engines.

Get a bunch of distilled water. Drain radiator. Add distilled water. Run engine to mix water with remaining coolant. Repeat.

Keep repeating until radiator drains clear. At this point, whatever is left is so diluted it won't be a problem.

Now drain radiator, and as much from engine as possible. You can use the engine block drains, or just park downhill and squeeze hoses to get as much as possible out.

Refill with 50/50 coolant mix. Measure coolant ratio (hygrometer).

If more coolant ratio needed, drain radiator and refill with coolant again.

 

This is the Coolant that is available locally
I simply cannot find the specifications for this thing. My question is, are all HONDA engines Aluminum? Because they state it is for ALL Honda engines and ALL season. For the record my 2018 CRV (US made) came in with blue coolant , which I intend to top off with the Type 2 coolant, need to get a couple of Gallons before they run out

 

And by the way, I do not think the local dealer knows what the 'F' they are doing . . . They use whatever comes in bulk and is a great dealer, if cars break down quicker, then great, more business for the service department.

This also appears similar but the last 5 digits are similar https://partshat.com/product/honda-g...t-type-2-1ltr/ at least there is a description of some sorts, but it does not state silicate-free, hence my previous question as to whether ALL Honda engine are made of aluminum?

In this link, it says the factory fill is green but one should always use the Type II Antifreeze https://s2000.wiki/view/Engine_coolant_fluid The page appears legit

 

The label notes "Type 2" on both the front and back of the bottle. And it's blue. This is the genuine coolant made in Thailand (where Honda makes many motorcycles).

Even the German-language specifies Honda Type 2. Have to take your word it doesn't specify an emergency or temporary substitute. Just use Type 2.

-- Chuck

 

Acura Type 2 is the same coolant

There are supply chain issues or something. When I was looking about a month ago, it was getting difficult to get coolant from Honda/Acura.

Some online Acura dealers stated that if you order, you may receive Honda coolant and vise versa.

Try an online dealer. Just get the factory made stuff.

If that's not available, Prestone and Zerex, and a few other brands have a "Honda" formulation and sell it at parts stores.

Simple.

 

Exactly. When you can not get the Honda OEM Coolant where you life, just simply use the one recomended for Honda from the most reputable Coolant manufacturer in your country, flush the cooling system and use it. Done. I dont use the Honda Coolant also, because it is a real Pain in the A** to buy it here.

By the way, when i want to top off a little bit and use the Honda Stuff, i have to oder a Gallon (!) of the special Honda stuff? Really? That´s a Joke. I enter the next DIY store here, grab a tiny bottle of my preferd Coolant, mix it, pour it, done. Cheap, easy, aviailable within 15 Minutes of the shelf.

As a side note, I think 95% of all Hondas here in Germany dont use OEM coolant. What happens? Engines run forever, Zero problems with corrosion of cooling System or heater cores reported.

Yes, all Honda Engines are aluminium. But the term "For aluminium Engines" is annother meaningless marketing buzz slogan that further confuse customers seraching for the propper coolant.

 

Here in the USA, for many years coolant was green, Prestone being the most popular brand. It contains silicates, and will damage aluminum engines. So when aluminum engines started to become common, people weren't aware different coolant was required.

There are still plenty of cast iron engines here, and green Prestone still a default selection in many people's minds. Its still prominent on parts store shelves.

So the nomenclature which stuff is safe for aluminum engines is very important here, as it'd be easy to buy the wrong stuff that would damage an aluminum engine.

 

The Honda stuff does seem to be really high quality. Its borate and silicate free.

I am not sure what proprietary ingredients they use for lubrication and corrosion prevention.

Yes, all Honda engines I can think of are either aluminum or magnesium. But the coolant flows over tons of steel, plastic, rubber, and other materials. The water pump impeller is zinc plated steel. There are plenty of raw steel parts.

Its not all just a marketing ploy.

There is a specific formulation that Honda has developed and tested.

Other manufacturers may be able to use the same formulation (or similar) and do their own testing.

Other formulations might even work.

But the "sure thing" to keep all the internals in pristine order is to use Honda genuine coolant.

I've seen a few engines damaged or cooling systems clogged by using the wrong coolant formula.

The time and monetary cost of assuming that you're fine and "finding out" is virtually always higher than just using the prescribed formulation.

Every time I open up a Honda cooling system that's used the Honda coolant...its marvelously pristine. Water pump bearings are perfect. Parts are clean. Radiators are totally clog free, rubber parts are still pliable, etc.

The colour is an easy indicator of the type of formulation.

If OEM coolant is not available, I would carefully select a formula that is compatible.

What's the average yearly use for a German vehicle? In the US, I think the average is now about 15K miles per year (prior to COVID).

Also....why are you needing to top off your coolant??