How to tell if a coolant is low silicate?

[MrCPU]

I'm looking at the supertech radiator fluid in the blue bottle, well, the white premix as well.

Neither of them say low-silicate, but in the composition, nothing seems to say silicate either.

I thought there might be a special "label" or somesuch, but I'm just not seeing it.

 

[flutie]

Peak Long life has no silicates Iam not sure if says so on bottle but you can go to there web site and it will tell you.Ive been useing it for over 100000 miles with no problem in a 2000 maxima Flutie

 

[Drew99GT]

If it's the Supertech all makes all models extended life stuff, then it's phosphate and silicate free.

 

[flutie]

Peak Long Life has no silicates Iam not sure if it says so on bottle but you can go to there web site and it will tell you.Ive been useing it for over 100000 miles with no problems.I change it every 2 years they say you can go 5 years or 150000 miles.Not me Flutie

 

[ewetho]

Almost all longlife coolants are low/no silicates. While Ford recommends their long life with silicates.

 

[daves66nova]

why are silicates used and what are they?