Work out exactly what you need
Five tools built from real formulation data — not marketing copy. Match a coolant to your climate and vehicles, check freeze and boil points at any concentration, compare technologies, diagnose a cooling system fault, or size a DEF order. No signup, no email required.
Coolant Finder
Answer four questions about your vehicles and climate, and get the right coolant chemistry and grade.
Open toolFreeze & Boil Point Calculator
See the freeze and boil point at any glycol concentration, and how much margin a pressure cap adds.
Open toolCoolant Technology Comparison
IAT, OAT, HOAT, Si-OAT and borate-organic hybrid compared side by side on life, protection and risk.
Open toolCooling System Troubleshooting
Pick your symptom — overheating, coolant loss, brown or milky fluid — and work through causes and checks.
Open toolDEF Consumption Calculator
Estimate diesel exhaust fluid consumption for a fleet and how many drums you need to order.
Open toolWant the detail behind the numbers?
Our knowledge centre explains coolant chemistry, service intervals, importing rules and private label — in plain language.
Built on real formulation data
The freeze and boil point tables come from the same ethylene glycol data we blend against, not from a marketing sheet.
Honest about limits
Where a product has no freeze protection, we say so. A tropical coolant with an honest 0 °C freeze point is not a downgrade — it is the right product for the climate.
No email wall
Everything here works without a signup. If you want pricing or a sample, the quote form is one click away.
These tools give general technical guidance based on published coolant data and standard workshop practice. Always follow the vehicle or equipment manufacturer's specification where one exists. Source: https://bolitch.com