What are the directions for the use of these: "Includes extra 2 pieces low side oil checker"?

Put the oil checker between your thumb, index finger and middle finger and with the A/C compressor running, push down on the low pressure (suction line - which is normally the big A/C line) 2 or 3 times. Set oil checker upright for 3-5 minutes then pick up the oil checker and check the oil level.

Is that blue thing an on-off valve knob ?

That's the standard low pressure connector for r134

Works all automotive trucks SUV?

Works for vehicles with refrigerant R-134a or R-1234yf.

Hi likes knows how works on suv's and series f150?

A. Purging air from the hose assembly It is important to eliminate any air in the hose before iniecting dve into the A/C system. (This process is necessary only once for the setup). 1. Hold the dye injector body upward while unscrewing the cap/hose assembly. Tun the handle of dye injector body counter clockwise all the way before filling.Fill the injector with dye. Replace cap/hose assembly, tightening securely. 2. While holding the assembly upward, start turning the handle body clockwise. Continue turning as dye enters the hose and pushes the air up. Use a pen to press the depressor of the coupler to release the air. Repeat this process as needed until dye appears at the coupler's end. B.Injection 1. Turn the A/C system and engine off!! 2. Connect injector to the low side service port of A/C system. Hold body of injector. Use injector body starting line on handle end as a guide. Turn handle clockwise to inject body application of dye. (Approximately 1 to 1-1/4 turn(s) for Concentrated Dye). (Approximately 3 1/2 turns(s) for Standard Dye). 3. Disconnect injector from the system and clean any excess dye left around the service port

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❄️ Keep your A/C cool and your ride cooler — inject like a pro!

BROAD COMPATIBILITY - Seamlessly works with multiple refrigerants including R134A, R1234YF, and R410A
ROBUST BUILD QUALITY - Lightweight aluminum alloy body with heavy-duty brass couplers ensures longevity and safety
USER FRIENDLY OPERATION - Designed for pros and novices alike—easy setup and smooth injection process
COMPLETE PROFESSIONAL KIT - Includes 2 couplers and 2 oil checkers for thorough system diagnostics and maintenance
PRECISION OIL DYE INJECTION - Inject with exact control via adjustable coupler and twist handle

The Lichamp AC Oil Injector Kit is a professional-grade tool engineered for precise injection of oil and dye into automotive A/C compressors. Compatible with R134A, R1234YF, and R410A refrigerants, it features a durable aluminum alloy body, heavy-duty brass couplers, and a pressure rating up to 3000 PSI. The kit includes adjustable couplers and oil checkers, enabling both experts and DIYers to maintain optimal A/C performance with ease and confidence.

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Manufacturer	Lichamp
Part Number	ODI-A00100
Product Dimensions	8.51 x 5.99 x 23.01 cm; 748.43 g
Item model number	ODI-A00100
Size	Multisize
Colour	Silver
Style	Fashion
Material	Aluminum Copper
Power Source	Corded Electric
Voltage	12 Volts
Item Package Quantity	1
Maximum Pressure	3000 Pound per Square Inch
Special Features	Heavy Duty
Included Components	Injector, 2x couplers, 2x oil checkers
Batteries Required?	No
Item Weight	748 g

Lichamp AC Oil Injector R134A, R1234YF Refrigerant A/C Dye Injector Kit with Adjustable Coupler and Oil Checkers

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