BT-1 BASIC Tester is the simplest and cheapest combustion leak tester on the market but still a quite effective tool for detecting medium combustion leaks in engines with liquid cooling systems. Bear in mind that the tester will not detect small leaks, the sensitivity is too low. 

FEATURES:

• The tube is made of chemically inert plastic, NOT PVC  ( PVC is cheap plastic, not suitable for chemical testers, above 90degC the PVC releases small amount of HCL, It will trigger false test result!!!! 
• 100ml of fluid included ( each test takes about 2ml of fluid )
  
• easy to use, fast and inexpensive, great for DIY
  
• compatible with radiators and expansion tanks, PETROL/DIESEL/LPG engines
• start the engine, connect the tester to the cooling system and wait up to 5 minutes for the result.
• 99.9% accuracy with the filter connected to the tester
  

HOW DOES IT WORK?

If a combustion leak is present, a small amount of exhaust gases is leaking into the cooling system. These gases can be detected with this simple tester.

BLUE OR RED TEST FLUID, WHAT IS THE DIFFERENCE?

Sensitivity is the main difference between blue and red fluid. Diesel engines have different exhaust gas composition (before catalyser), lower level of co2, higher nitrates and carbon. 

The blue fluid is not suitable for DIESEL engines as it changes colour to GREEN, making it more confusing with the interpretation of the test result.  In diesel engines, the red fluid simply performs better.

IMPORTANT NOTE!!! :  The white rubber bung fits a wide range of cars anyway before placing an order, you have to check if it fits the coolant's inlet in your car.

BEFORE USE, ALWAYS FLUSH THE TESTER WITH FRESH TEST FLUID!!!