AutoLine Pro is an American Family Business based in California. 【 Made for all Leak Testing Scenarios 】 EVAP, Vacuum, Intake, Exhaust, Turbo, Super Chargers, EGR, Cooling Systems Engine Blocks, Body Work, and more! 【 ULTRA-PURE FORMULATION 】 We've researched and developed the best formulation. Don't settle for anything less! Other non-reputable fluids may coat your internal surfaces/sensors or damage your equipment over time. 【 Cleanest and Best Smoke Output 】 Tested and Proven rigorously in our California Lab. 【 Compatibility 】 Works with AutoLine Pro Smoke Testers and all other brands of smoke machines in the market. For AutoLine Pro's Latest Li-Ion Powered VENTUS Smoke Machine (with ZERO ODOR Technology), use VENTUS Fluid only. 【 AS AN AMERICAN FAMILY BUSINESS 】 We stand proudly behind our products. If you have any issues, don't hesitate to contact us directly.