Maximum Seal XL4 Direct Inject

The Maximum Seal XL4 Direct Inject is a sealant designed to fix leaks in air conditioning systems. It comes in an injector and is compatible with all refrigerants except ammonia. The connection size is unclear, with conflicting information from customers. Customer reviews of the product are mixed. Some customers have had success with the sealant, stating that it fixed their leak and improved the performance of their air conditioner. One customer even had their air conditioner technician recommend the product. However, other customers have not had positive experiences. One customer mentioned that the sealant had no effect on their AC system and did not fix the leak. Another customer stated that the product worked initially, but the leak returned after a year. Overall, the reception of the Maximum Seal XL4 Direct Inject seems to be somewhat divided. While some customers have had success with the product, others have not. It may be worth Considering alternative options or Consulting with a professional before using this sealant.