Block Tester BT-600 Replacement Combustion Leak Test Fluid 16 oz

Features

• 16 ounces / 474 ml (good for 16 tests in Block Tester brand combustion leak tester)
• Use in Block Tester brand combustion leak tester or other fluid-based leak testers
• Works with GAS or DIESEL engines as well as propane, CNG, and other alternative fuels
• When fluid turns from BLUE to YELLOW combustion leak is present