So Guard just launched it's concentrated coolant, with around 93% Ethylene Glycol, now I have a passo which I have filled with water to check for leaks after replacing its radiator. I've normally stuck to Caltex Coolants but I have used Guards Heavy Duty Red Coolant before in a Cultus and it did the job fine when it came to ensuring the rad didn't rust and I'm quite sure it wasn't just dyed water because it was a lot slicker than water was. Anywho, I'm considering buying 2L worth of the concentrated one, adding 2L's of water and pouring it in. Any recommendations from anyone that has used this coolant in particular, any reason I should just buy over priced diluted Caltex instead of Guard? Guard has been upping it's game recently when it comes to it's products so I'm really considering it and I want to get done with this in a week because summers are almost here.
