For decades, coolant manufacturers faced a frustrating paradox: silicates were essential additives for protecting aluminum engine components from corrosion, but they had a nasty tendency to form gel deposits that clogged radiators and water pumps. This "silicate drop-out" problem became particularly severe in mixed-fleet operations where coolant quality varied or when hard water was used for top-ups. The gel would accumulate in cooling passages, restricting flow and causing localized hot spots that could lead to catastrophic engine failure.
The breakthrough came with silicate stabilization technology, which keeps these protective compounds suspended in solution indefinitely. This allows coolants to deliver aluminum protection without the risk of gel formation, even under challenging conditions. Modern formulations like Regular -36 °C Green/Blue incorporate this advanced stabilization alongside hard-water additives, making them suitable for diverse operational environments.
