A truck clears its morning walkaround, then two weeks later it's at a dock with an aftertreatment fault. International LT and LoneStar maintenance software closes that gap — turning paper DVIRs, PM reminders and a shoebox of receipts into one connected record per unit. Book a demo on your LT/LoneStar fleet to see it run on a real truck.
One maintenance platform for your LT & LoneStar fleet
Digital inspections, mileage and engine-hour PM, defect-to-work-order tracking and a clean service history — per VIN, across every International unit in your yard.
The LT and LoneStar share the same Project Horizon cab and much of the same powertrain and aftertreatment architecture — which means they share the same maintenance blind spots. Below is how a single platform keeps both models on schedule, catches faults before they strand a load, and leaves you an audit-clean record for every unit.
2 modelsone connected maintenance record, not two spreadsheets
Most fleets running Navistar iron track the LT fleet one way and the flagship LoneStar another, because the trucks look different in the yard. Under the hood they aren't — and splitting them across tabs is how a PM interval slips. HVI holds both model lines in one view, filtered by model, engine or location — explore fleet maintenance management to see how.
- Aero on-highway tractor (ex-ProStar)
- Day cab to 73" sky-rise sleeper
- S13 Integrated Powertrain or Cummins X15
- GVWR 32,000–60,000 lb
- Classic long-hood flagship conventional
- Shares LT/ProStar cab & electronics
- Same engine & aftertreatment family
- Highway + special-order vocational
Because the mechanical systems overlap, one PM template and one inspection form library covers both lines — you're not rebuilding the program twice. Book a demo to see LT and LoneStar in one fleet view.
S13 & X15engine-specific PM that triggers on miles and hours
An LT with the S13 Integrated Powertrain and a LoneStar on a Cummins X15 don't service on the same clock. Oil, fuel filters, DEF-system checks and valve lash land at different intervals, and idle-heavy duty cycles push engine-hour-based items ahead of mileage. See HVI's preventive maintenance scheduling, which fires on whichever threshold hits first.
Dual-DEF-injector aftertreatment checks, T4 AMT service and filter changes scheduled per interval, flagged before due.
XPI fuel system, VGT turbo and DPF/SCR service items tracked; OTA calibration events logged against the unit.
Legacy Navistar engines kept on the same board — no unit left tracked on paper because it's an older build.
Defect flowfrom a driver's DVIR to a closed service record
The most expensive failures on an LT or LoneStar aren't the ones nobody saw — they're the ones a driver flagged that never turned into a repair. See HVI's daily operator reporting (DVIR), which makes a reported defect impossible to lose: it opens a work order automatically and tracks it to sign-off.
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Driver reports itPre-trip DVIR on the phone: "SCR warning lamp, derate warning." Photo attached, 08:04 AM.
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Work order opens itselfDefect auto-creates a work order tagged to the VIN, routed to the shop queue.
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Tech resolves & logs partsDEF injector replaced, part number and labor hours logged against the unit.
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Record closes, audit-readySigned service record filed to the VIN's history — pullable for an FMCSA review in seconds.
That chain is the difference between a $200 injector caught early and a $7,000 aftertreatment teardown after a forced derate on the highway. Book a demo of the DVIR-to-work-order flow.
The checklista daily & PM check built for LT / LoneStar systems
Here's the kind of model-specific checklist your drivers and techs run inside HVI — each line observable, grouped by system, no vague "looks good." Load it once as a digital form and every unit inherits it.
- DEF tank level + no crystallization at injectors
- No active DPF/SCR fault or derate warning lamp
- Last regen completed; no repeated active-regen cycles
- Coolant & oil level; no leaks under the engine
- Air pressure builds & holds; no audible leaks
- Brake lining / slack adjusters within spec
- AMT (T4 / Eaton) shifts clean; no fault codes
- Tire tread, pressure & no uneven wear
- Bendix Wingman / collision-mitigation active, no fault
- All exterior lamps & markers working
- Wipers, horn, mirrors, seatbelt secure
- Dash warning lamps reviewed & cleared
- Fifth-wheel lock engaged, jaws & kingpin secure
- Frame rails & crossmembers — no cracks or sag
- Air lines & electrical to trailer intact
- Fuel/DEF caps secure; no visible drips
Want this as a reusable digital form across your whole Navistar fleet? Sign up free and load your LT/LoneStar checklist, or explore our digital inspection toolkit.
TelematicsOnCommand Connection health data, turned into action
Navistar's OnCommand Connection already streams 130+ vehicle health checks off the second-gen telematics device on your LT and LoneStar units. The gap is what happens next — a fault code that nobody converts into a scheduled repair is just noise. See HVI's telematics integration, which turns that feed into PM triggers and work orders.
- Fault / derate codes
- Odometer & engine hours
- Aftertreatment & DEF status
- Diagnostic health checks
- Auto-scheduled PM by miles/hours
- Work orders from fault codes
- Per-VIN service & repair history
- Fleet-wide uptime dashboard
Instead of logging into one portal to read codes and another to schedule the fix, both live in one place — explore the fleet analytics dashboard. Book a demo to connect your OnCommand feed.
Why it paysthe numbers behind disciplined truck maintenance
Lower annual maintenance cost reported by fleets that move inspections and PM onto a connected platform, with payback typically around three months.
ATRI pegs the average marginal cost of a truck at roughly $2.27 per mile — every unplanned breakdown day burns far more than the repair itself in lost revenue.
Vehicle health checks OnCommand Connection monitors on LT/LoneStar units — value only shows up when those checks drive a scheduled repair.
Vehicle Maintenance is one of the seven FMCSA BASIC categories scored in CSA — a clean, pullable service history per VIN is what keeps that score defensible at roadside and audit. Book a demo to see per-VIN records pulled in seconds.
From a fleet maintenance manager
We run a mixed Navistar fleet — LTs on the long lanes, a couple of LoneStars for the senior drivers. The DEF and regen faults were killing us because a code would show in OnCommand and nobody would act on it until the truck derated. Now a fault opens a work order the same hour, and the whole service history sits under the VIN. Last audit took me twenty minutes instead of two days.
International LT & LoneStar software — FAQs
Does HVI work for both International LT and LoneStar trucks?
Yes. Both models share the Project Horizon cab, engine and aftertreatment architecture, so one inspection-and-PM program covers both. You track them in a single fleet view, filtered by model, engine or location.
Can it schedule PM for the S13 and Cummins X15 differently?
It can. You set each engine's intervals, and PM triggers on whichever hits first — mileage or engine hours. Highway LTs usually trip on miles; idle-heavy or vocational LoneStars often trip on hours.
Does it connect to OnCommand Connection telematics?
HVI integrates telematics feeds like OnCommand Connection so odometer, engine hours and fault codes flow in automatically. Those codes can then auto-generate work orders and keep PM scheduling accurate without manual entry.
How does it help with FMCSA compliance?
Every inspection, defect and repair is logged per VIN with timestamps and signatures, giving you a clean, pullable service history. That record supports the Vehicle Maintenance BASIC at roadside inspections and DOT audits.
Is HVI only for International trucks?
No — it's a full heavy-vehicle maintenance platform for mixed fleets. International LT and LoneStar are fully supported, but you can run Freightliner, Kenworth, Volvo, Peterbilt and trailers in the same account.
Put your whole LT & LoneStar fleet on one maintenance record
Digital inspections, engine-specific PM, automatic work orders from defects, and an audit-clean history for every International tractor — live in days, no hardware to install.
No credit card · No hardware · Works across your mixed fleet
