10PCS Upgraded AC Oil Tester for R134a/R1234YF – Deep Recess Adapter for Low Pressure Ports

Stop Failed Tests: Upgraded AC Oil Tester for R134a/R1234YFTired of testers that fail on deeply recessed ports? Our upgraded adapter is engineered to solve this #1 complaint, delivering reliable Schrader valve engagement for accurate oil checks when you need them.Why This Test Is Essential for Your Shop:Dual Compatibility: Works seamlessly with both R134a & R1234YF systems.Cost-Saving Prevention: Detect low or acidic oil—a common precursor to compressor failure and repair bills that can exceed $500.Non-Invasive Check: Sample directly from the port. No system disassembly, no oil draining, and no unnecessary downtime.Get Results in Two Simple Steps:Run your A/C at maximum cooling for 5 minutes.Press the tester firmly onto the low-pressure port—get your sample in seconds.Protect your AC systems and your bottom line with the tester built for modern AC systems.

• 【Solves Deep Recessed Port Issues】 Newly engineered adapter reaches deeply recessed low-pressure ports (common in 2020+ vehicles), ensuring the Schrader valve depresses reliably—putting an end to failed tests.
• 【Dual Refrigerant Compatibility】 This auto air conditioning system oil tester is designed for both R134a & R1234YF systems. Eliminate compatibility guesswork. (Always verify refrigerant charge before testing.)
• 【Prevents Costly Compressor Damage】 A leading cause of compressor failure is low or acidic oil. This AC oil checker helps you catch issues early, potentially preventing a repair that often costs over $500.
• 【Checks Oil Level & Acidity Without Disassembly】 Sample directly from the low-pressure port—skip the system opening, oil draining, and vehicle downtime.
• 【2-Step Simple Operation】 (1) Run A/C on max for 5 mins to circulate oil. (2) Securely press this A/C oil tester onto the port—get an instant sample with minimal effort.