Ethylene Glycol: To OAT or non-OAT?

I go with whatever the manual says / dealer says but I buy it elsewhere at a discount. My current vehicle takes OAT and the previous one was Good Old Green. I will change the OAT at 100K miles even though it's supposed to be good much longer, and I always changed the "Green" every 2 years regardless of mileage.
 
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A bit of a bump, but just in case anyone else finds this and needs to read it...

I found out that the original Suzuki coolant is made by Ecstar, its called "Super Coolant" and would have been green in colour (likely some kind of OAT)

I ordered it from another Suzuki dealer and I ended up with this: "Super Coolant 2", despite the part number being for the original.
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This stuff isn't the same neon green colour that was factory fill, it's more of a dark blue colour.
Perhaps this one is a HOAT, or something.
 
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