Todays vehicles require precise amounts of oil. Spotgun oil cartridges utilize the Spotgun injection system to inject a precise measured amount of A/C Oil while eliminating moisture contamination in the oil. High quality A/C compressor lubricant in 46 viscosity. Works with systems containg R1234yf A/C RefrigerantFeaturesPAG 46 Oil CartridgeSpecifications Size: 8 oz Weight: 0.7 lbs