2018 Volvo VNL Fluid Type Specifications Guide
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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As an ASE-Certified Master Technician, I'm here to provide a comprehensive guide to all factory-specified fluids for your 2018 Volvo VNL. Proper fluid maintenance is crucial for the longevity, performance, and reliability of your heavy-duty truck. Always refer to your owner's manual or an authorized Volvo service information system for the most precise and up-to-date specifications, as variations can occur based on specific engine and transmission configurations.
Quick reference
| Fluid | Type/Spec | Capacity (Approximate) |
|---|---|---|
| Engine Oil | API CK-4, VDS-4.5 (various weights) | 38-42 quarts (verify for engine) |
| Engine Coolant | Volvo VCS-2 (Yellow OAT) | 60-75 quarts (verify for engine) |
| Transmission Fluid | Volvo 97341 (ATF) / Volvo 97307 (Manual/I-Shift) | Varies by transmission model |
| Rear Differential Oil | API GL-5, SAE 75W-90 / 80W-90 | Varies by axle (typically 12-18 quarts per axle) |
| Brake Fluid | DOT 4 (for hydraulic clutch/air dryer) | Varies (consult owner's manual) |
| Power Steering Fluid | Volvo 97340 (Dexron III H/Mercon) | 4-5 quarts |
| Washer Fluid | All-season automotive washer fluid | ~1 gallon |
| DEF (Diesel Exhaust Fluid) | ISO 22241 (API DEF certified) | 13-23 gallons (verify tank size) |
Engine Oil
For your 2018 Volvo VNL, the primary engine oil specification is API CK-4. Volvo also has its own engine oil specifications, with Volvo VDS-4.5 being the most prevalent for this model year, which supersedes VDS-4. This specification is designed to provide enhanced oxidation stability, shear stability, and aeration control, critical for modern heavy-duty diesel engines.
Recommended viscosity grades can vary based on ambient temperature and engine model (e.g., D11, D13, D16). Common weights include SAE 10W-30 and SAE 15W-40. Always consult your owner's manual or the engine decal for the precise viscosity grade recommended for your specific engine and operating conditions. Using the correct VDS-4.5 approved oil is essential for maintaining engine warranty and optimal performance, especially concerning exhaust aftertreatment systems.
Capacity: Engine oil capacities vary significantly by engine model. For a D13 engine, it can be in the range of 38-42 quarts. Always fill to the dipstick
More specs for the 2018 Volvo VNL
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
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.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
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
2018 Volvo VNL Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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