NEO TOOLS 11-271 Head Gasket Leak Tester – CO2 Combustion Leak Detector Kit for Petrol, Diesel & LPG Engines with 250ml Bromothymol Blue Fluid, Universal Cone Adapter & 10 Brand-Specific Radiator Adapters

Detect combustion gas leaks in under two minutes with a chemical CO2 reaction that turns bromothymol blue fluid yellow for petrol/LPG or green for diesel. The NEO TOOLS 11-271 head gasket leak tester combines a transparent reaction chamber, chemical-resistant hose, and a 10-adapter set covering Mercedes, GM, VW, Audi, Ford, Honda, Toyota, BMW, Opel, Peugeot, and Renault – all packed in a blow-molded case.

Overview

This cooling system diagnostic kit is built for professional workshops and serious DIY mechanics. The tester body is made from high-quality transparent plastic, allowing clear observation of the fluid colour change. The included 250 ml bromothymol blue solution is reusable for up to 50 tests when uncontaminated, making it a cost-effective tool for routine engine health checks. The flexible rubber hose resists automotive chemicals, ensuring durability in harsh under-bonnet conditions.

What stands out

• Fast, reliable diagnosis: detects CO2 in the cooling system within minutes on a warm engine.
• Broad engine compatibility: works with petrol, diesel, and LPG engines.
• Complete adapter kit: universal cone plus 10 brand-specific adapters for common European, American, and Asian vehicles.
• Reusable test fluid: 250 ml bottle provides up to 50 tests if not contaminated.
• Clear visual indication: blue = no leak, yellow = petrol/LPG leak, green = diesel leak.
• Durable storage: blow-molded case keeps all components organised and protected.

Technical details

• Detection method: chemical CO2 reaction in coolant
• Indicator fluid: bromothymol blue solution, 250 ml included
• Fluid colour (no CO2): blue
• Fluid colour (petrol/LPG CO2): yellow
• Fluid colour (diesel CO2): green
• Engine compatibility: petrol, diesel, LPG
• Included adapters: universal cone, plus specific adapters for Mercedes, GM, VW, Audi, Ford, Honda, Toyota, BMW, Opel, Peugeot, Renault
• Tester body material: high-quality transparent plastic
• Hose material: flexible chemical-resistant rubber
• Approximate tests per fluid bottle: up to 50 (if fluid reused and uncontaminated)
• Storage: durable blow-molded plastic case
• Application: professional and DIY automotive engine diagnostics
• Principle of operation: detects combustion gases (CO2) in engine cooling system
• Included components: tester unit, 250 ml reaction fluid, empty fluid bottle, universal cone adapter, specific radiator adapters, instruction manual
• Fluid reusability: yes, if no CO2 detected and not contaminated
• Test duration: rapid diagnosis, typically within minutes
• Required engine state: warm engine, operating temperature
• Coolant level requirement: sufficient to cover radiator core
• Chemical resistance: components designed to resist automotive fluids

Our verdict

A complete, professional-grade head gasket leak tester that pays for itself after a few uses. The colour-coded fluid and extensive adapter set make it a must-have for any garage diagnosing cooling system issues.