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Automotive RepairDiagnostics & Troubleshooting4HighAutomotive Technician or DIY Mechanic$ implied

Unable to refill coolant system completely after engine rebuild; only 2 of 6.5 liters goes in, preventing circulation.

No tool or method available to purge airlocks and fully fill coolant system after water pump replacement; bleeding process is manual and unreliable.

Severity

4High

Willingness to Pay

implied

Added

May 23, 2026

App Concept

CoolFill Pro

CoolFill Pro is a vacuum coolant refill kit with integrated airlock diagnostics. It automates the filling and bleeding process, ensuring complete system refill without air pockets. Users simply connect to the expansion tank, and the device pulls vacuum, then draws coolant in from a reservoir, eliminating manual bleeding.

Key Features

Vacuum-assisted coolant fill to eliminate airlocks
Integrated pressure gauge to confirm complete fill
Universal adapter kit for most vehicle expansion tanks
Smartphone app with step-by-step instructions and vehicle-specific capacities

Target Users: Independent automotive technicians and DIY mechanics working on modern engines with complex cooling systems

Revenue Model: $79 one-time purchase for the kit, with $12 refill for adapter packs

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