The Peak coolant that is the correct color for your year, i.e. pink for the MkIV, is fine. I have been using it for several years with no problems.
Pros: no problems for years
Vehicle:
Volkswagen
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I ran the euro Peak without issue for about a year but I was bleeding coolant and in desperate need of the cooling system overhaul.
Pros: ran without issue
Vehicle:
BMW
My car is currently filled with the Peak Euro Blue stuff, works fine, identical to the OE BMW formula anyway
Pros: works fine, identical to OEM
Vehicle:
BMW
I personally use Peak brand coolant, and I've never had an issue for 100K+ miles.
Pros: no issues for 100K+ miles
Vehicle:
Subaru Forester
Mileage: 160934 km
Even though most will say to stick with G12/G13, I think that is where that "sand" comes from. I decided last year to completely drain the system - including engine block - and converted to Peak antifreeze. I have not had any problems since.
Pros: no problems since
Cons: sand in heater core
you can use peak, most likely it will be fine, it may just cause your radiator and heater core to clog. i used to run it with absolutely no problems. i now just prefer g11/g12
Pros: used to run it
Cons: may cause clogging
Vehicle:
Volkswagen
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