Mastercool MSC90375 2 oz 1/4 FFL x 1/4 Inch Oil Injector R-12

Excellent method for adding refrigerant oil or large amounts of UV leak detection dye to the A/C system Add oil by allowing vacuum to pull it in after the evacuation process, or use refrigerant to push it in using the recharge system Rugged all metal 2 oz. canister The standard models use a needle style valve attached between the manifold gauge set or charging equipment and A/C hose