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    A/C Refrigerant & Oil

    2018 Ford Transit A/C Refrigerant and Oil Specifications

    AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.

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    Quick Answer

    • Refrigerant Type: R-1234yf
    • Full System Charge: 28.0 oz (794 g)
    • PAG Oil Type: PAG 46
    • PAG Oil Amount: 4.0 oz (120 mL)
    • Low-Side Service Port Location: Near the passenger-side firewall
    • High-Side Service Port Location: Near the passenger-side headlight

    Why R-1234yf Matters

    The 2018 Ford Transit uses R-1234yf refrigerant, which has a lower global warming potential (GWP) than the R-134a used in older vehicles. This change was mandated by the EPA to reduce the environmental impact of automotive A/C systems. However, R-1234yf is more expensive and flammable than R-134a, and it requires special equipment for service.

    Recharge Procedure

    Recharging the A/C system on a 2018 Ford Transit is not a simple DIY project. It requires a special R-1234yf-compatible recovery machine to evacuate the system and recharge it with the correct amount of refrigerant by weight. Overcharging or undercharging the system can cause damage to the A/C compressor and other components.

    Common A/C Problems for This Vehicle

    • Compressor Failures: The A/C compressor is a common failure point on the Ford Transit. Symptoms of a failing compressor include a grinding noise, a burning smell, or a lack of cold air from the vents.
    • Condenser Issues: The A/C condenser is located in front of the radiator and is susceptible to damage from road debris. A clogged or damaged condenser can restrict airflow and cause the A/C system to overheat.
    • Evaporator Leaks: The A/C evaporator is located inside the dashboard and can develop leaks over time. Symptoms of an evaporator leak include a musty smell from the vents, a loss of cooling, and a wet passenger-side floorboard.

    When to Call a Pro

    If you are experiencing any of the above problems with your 2018 Ford Transit's A/C system, it is best to have it diagnosed and repaired by a qualified technician. A certified A/C shop will have the proper equipment and expertise to safely and effectively service your vehicle's A/C system.

    Disclaimer: It is illegal to service or repair your own A/C system without an EPA 609 certification. Find a certified A/C shop on Repairius.

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    More specs for the 2018 Ford Transit

    Oil Capacity & Filter

    Capacity, weight, filter PN, drain plug torque, change interval.

    Fluid Type Specs

    Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.

    Coolant Capacity & Type

    Total system capacity, OEM coolant spec, flush interval, bleed tips.

    Transmission Fluid & Service

    Trans model, fluid spec, capacity, filter PN, service interval.

    Torque Specifications

    Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.

    Brake Pad & Rotor Specs

    Pad PNs, rotor size, min thickness, caliper torque.

    Tire Size & Pressure

    OEM size, cold psi, bolt pattern, wheel size, TPMS.

    Battery Size & Group

    Group size, CCA, AGM/flooded, dimensions, reset note.

    Bulb Sizes (Headlight, Tail, Fog)

    Headlight, fog, tail, turn, reverse, interior.

    Factory Maintenance Schedule

    Service intervals by mileage, severe-duty notes, known issues.

    Towing Capacity & Payload

    Max tow, payload, GVWR/GCWR, hitch class by trim.

    Fuse Box Diagram & Amperage

    Fuse box locations, layout, amps, and what each fuse controls.

    Serpentine Belt Routing & Length

    Belt routing, length, rib count, OEM + aftermarket PNs.

    Wheel Alignment Specifications

    Camber, caster, toe ranges (front & rear), adjustability notes.

    Paint Color Codes

    All factory colors with paint codes, sticker location, touch-up tips.

    Wiper Blade Sizes

    Driver/passenger/rear blade size, attachment, OEM + cross-refs.

    Spark Plug Type & Gap

    Plug PN, gap, torque, interval by engine.

    Transmission & Axle Gear Ratios

    Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.

    Key Fob Programming

    DIY programming steps, FCC ID, fob PN, battery, transponder.

    Same spec — other model years

    Maintenance & repair guides

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