Automotive Air Conditioner ExtenDye 1oz Cartridge for Spotgun Jr. Injection System, Super-Concentrated UV Dye, Hybrid Safe, Anti-wear Technology, Services Up to 40 Vehicles, 4- Pack ENHANCED PERFORMANCE: A/C ExtenDye is engineered with additives that extend the lifespan and efficiency of A/C systems, helping to improve the friction coefficient by over 50 percent for better fuel economy. SUPER-CONCENTRATED UV DYE: This product includes a super-concentrated UV dye enriched with a friction modifier, significantly increasing compressor oil lubricity to promote optimal system performance. ANTI-WEAR TECHNOLOGY: Equipped with an anti-wear additive to create a protective film that prevents metal-on-metal contact, reducing friction and heat to extend the lifespan of A/C components. SERVICES MULTIPLE VEHICLES: Each package contains four 1 oz A/C ExtenDye cartridges, servicing up to 40 vehicles, and includes service stickers for easy tracking and maintenance documentation. HYBRID SAFE AND CERTIFIED: Specially formulated to protect hybrid A/C systems, including electrically driven compressors, and features an SAE-J2297 certified dye for reliable and safe use.