Maintenance Checklist

DAILY

Engine & Fluids

☐ Engine oil level☐ Coolant level
☐ Fuel, oil, or coolant leaks
☐ Belts & hoses (cracks / wear)

Tires & Wheels

☐ Tire condition (cuts, bulges)
☐ Lug nuts secure
☐ Wheel seals leaking
☐ Steer tires OK

Brakes & Air

☐ Air pressure build‑up normal
☐ No audible air leaks
☐ Slack adjusters
☐ Brake lines secure

Lights & Safety

☐ Headlights / high beams☐ Brake & turn signals
☐ Marker lights
☐ Reflectors / wipers

Suspension & Frame

☐ Airbags inflated☐ Truck sitting level
☐ No visible cracks

WEEKLY

☐ Check tire pressure (gauge)☐ Check tread depth (steers)
☐ Top off fluids (oil, coolant, washer)
☐ Drain air tanks
☐ Battery terminals tight / clean
☐ Fifth wheel lubricated & jaws inspected

MONTHLY

☐ Inspect oil condition☐ Inspect turbo & charge‑air hoses
☐ Measure brake lining thickness
☐ Inspect suspension (U‑bolts, airbags)
☐ Cooling system clean (radiator & CAC)
☐ Check belts & tensioners
☐ HVAC, mirrors, windshield condition

MILEAGE‑BASED  MAINTENANCE (LOG)

☐ 15k–25k mi – Oil & filters / grease☐ 50k–75k mi – Fuel filters / trans check
☐ 100k–150k mi – Coolant / trans / diffs
☐ 300k–500k mi – Turbo, DPF, clutch planning

OWNER‑OP MONEY PROTECTION

☐ Track maintenance cost

☐ Track fuel MPG
☐ Track downtime days
☐ Watch for regen increases
☐ Watch oil consumption changes
☐ Log warning lights immediately