Delivery: Typically 4-8 working days total including 1-3 days handling to the UK (estimated times for other locations shown at checkout)
Import duties and taxes may apply depending on destination. UK orders under £135 or less ship DDP with no extra charges at delivery. Orders over £135 may have import duties.
Ships from China. Your order will be processed and dispatched from the warehouse within 1–3 days if you order by 12 AM London.
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1. The R-134a Refrigerant Oil Test Swab is a disposable diagnostic tool designed to check the oil level and quality in automotive air conditioning systems. Made of plastic and cotton, it provides quick visual results for R134a refrigerant-based systems. 2. How to Use: Step 1: Start the engine and set the AC to maximum cooling. Step 2: Ensure the compressor is running. Step 3: After 2-3 minutes, press the swab’s nozzle against the low-pressure valve port rapidly 2-3 times. Step 4: Interpret results and take action as needed. 3. Oil Level Diagnosis --Less than 20% Oil: Severe deficiency – Add 70–100g refrigerant oil based on vehicle specifications. --About 50% Oil: Mild deficiency – Add 30–40g refrigerant oil. --About 70% Oil: Adequate – No action required. 4. Oil Quality Diagnosis: --Normal: White to pale yellow. --Early Degradation: Yellow/orange – Add compatible oil. --Severe Degradation: Red/brown – Replace refrigerant and oil entirely. 5. Compatibility: R134a systems only. 6. Note: Does not work on systems with fluorescent dye additives.
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