Gold Label Combustion Leak Test Fluid – 500ml (16.9 oz) | Head Gasket Tester Liquid for Gas & Diesel Engines | 100+ Tests | Fast Leak Detection for Cracked Heads, Blocks, Gaskets

About this product

100+ Tests in One Bottle: Large 500ml (16.9 oz) bottle provides enough fluid for over 100 combustion leak tests perfect for DIYers, mechanics, and shop use. Diagnose in Seconds: Detect blown head gaskets, cracked cylinder heads, warped sealing surfaces, or stripped bolts, results appear in seconds. Easy-to-Read Color Change: Blue = No Leak. Yellow = Combustion Leak Detected. Instant visual confirmation saves time and avoids engine damage. Compatible with Most Block Tester Kits: Designed to work with nearly all standard block tester kits. Just fill, test, and check color, no complicated setup. Compatible with Gas & Diesel Engines: Designed for use in most gasoline and diesel engine diagnostic setups. Always follow testing instructions for best results.