keepitcorrect.org

Vehicle maintenance, made exact

Know what to service, when to service it, and why it matters.

We are building a maintenance intelligence platform for `2000-2026` vehicles using official manuals, government data, and an interval-first foundation that future services can trust.

First-release focus

  • Fluid intervals with source-backed citations
  • Transmission and drivetrain service guidance
  • Wear-part tracking for long vehicle life

26

Years of vehicles in scope

13

Seed models ready to normalize

13

High-trust source paths

Vehicle entry points

Jump straight into the models we are prioritizing first.

Each model below now links into its vehicle coverage page, so you can move from the landing page directly into the parsed maintenance data we have so far.

Trusted ingestion

Only scrape what can defend itself.

The maintenance interval database should prefer sources that are official, government-backed, or clearly attributable. Dealer blogs and forum posts can help later, but they should not define the truth layer.

Toyota

Toyota Owner's Manuals and Warranty & Maintenance Guides

Use maintenance guide PDFs and owner manuals as the authoritative maintenance interval source.

maintenance-scheduleofficialVisit source

Ford

Ford Owner Support and Scheduled Maintenance Guide PDFs

Primary source for normal and special operating schedules; scrape by make, model, and year.

maintenance-scheduleofficialVisit source

Honda

Honda Owners Manuals and Maintenance Minder references

Use manuals plus Maintenance Minder guidance where schedules are usage-based instead of static mileage tables.

owner-manualofficialVisit source

General Motors

GM Owner Center Manuals and Maintenance Schedules

GM manuals and warranty booklets include brand-specific scheduled service requirements.

maintenance-scheduleofficialVisit source

Nissan

Nissan USA Owner Manuals

Owner manuals and supplemental maintenance guides are the source of inspection and replacement intervals.

owner-manualofficialVisit source

Subaru

Subaru Warranty and Maintenance Booklets

Warranty and maintenance booklets are easier to normalize than full owner manuals for Subaru.

maintenance-scheduleofficialVisit source

Mazda

Mazda Scheduled Maintenance PDFs

Mazda exposes scheduled maintenance PDFs that are ideal for extraction into structured intervals.

maintenance-scheduleofficialVisit source

Volkswagen

Volkswagen Maintenance Schedules

VW service resources centralize manuals and service intervals for later ingestion.

maintenance-scheduleofficialVisit source

Hyundai

Hyundai Owner Resources

Manual and warranty resources cover schedule intervals, capacities, and severe-use caveats.

owner-manualofficialVisit source

Kia

Kia Manuals and Guides

Use manual and guide PDFs to normalize service intervals across trims and powertrains.

owner-manualofficialVisit source

Federal

NHTSA Recalls API

Essential for tying maintenance guidance to safety campaigns, recalls, and active investigations.

recalls-apigovernmentVisit source

Federal

NHTSA VIN Decoder API

Use VIN decoding to map a user vehicle to platform, engine, drive type, and exact service track.

vin-apigovernmentVisit source

Cross-brand

Manufacturer US Sales Releases

Annual and monthly OEM sales releases help decide which nameplates to ingest first for each brand.

sales-sourceofficialVisit source

Maintenance scope

Track the parts and fluids that actually extend vehicle life.

The product should revolve around maintainable items, not generic specs. Every record should answer the same question: what should be inspected or replaced, at what interval, and under which driving conditions?

Fluids

Track replacement and inspection intervals for the fluids that directly affect engine, brake, cooling, and drivetrain life.

Fluid neglect is one of the fastest ways to shorten component life, especially on engines, transmissions, and AWD systems.

  • Engine oil and filter
  • Transmission fluid
  • Brake fluid
  • Coolant
  • Power steering fluid
  • Transfer case and differential fluid

Filters and ignition

Surface the wearable items that quietly reduce performance and efficiency long before a failure happens.

These items often look minor, but they affect fuel economy, drivability, emissions, and long-term engine health.

  • Engine air filter
  • Cabin air filter
  • Fuel filter
  • Spark plugs
  • PCV valve

Drivetrain and transmission

Separate lifetime-marketing language from practical service intervals for transmissions and driveline components.

Transmission and driveline repairs are expensive enough that even conservative service guidance can save owners thousands.

  • Automatic transmission service
  • CVT fluid service
  • Manual transmission fluid
  • Rear differential service
  • Transfer case service

Chassis and wear items

Keep recurring wear items visible so owners can prevent secondary damage and preserve safety.

Wear items compound. A small neglected part often creates a larger repair when its condition is not tracked over time.

  • Brake pads and rotors
  • Tires and alignment
  • Serpentine belts
  • Wiper blades
  • Battery
  • Suspension inspections

API-first foundation

An interval API before a massive crawl.

Keep the public shape simple: vehicles, service items, interval rules, operating conditions, and citations.

Authoritative source ingestion

Pull interval truth from OEM manuals, warranty booklets, and government APIs before trusting community or dealer content.

VIN-first normalization

Decode VINs to resolve platform, engine, drivetrain, and trim so interval guidance maps to the exact vehicle a user owns.

Interval-first product shape

Center the system on service items, mileage/month thresholds, severe-use conditions, and citations that other tools can reuse.

Human-friendly maintenance UX

Make the system understandable for non-mechanics with simple service intervals, severe-use warnings, and clearly sourced recommendations.

GET /api/maintenance
GET /api/maintenance?brand=Toyota&model=Camry
GET /api/maintenance?category=Fluids&condition=severe
GET /api/maintenance/categories
GET /api/vehicles
GET /api/vehicles/:brand/:model
GET /api/sources
GET /api/health

{
  "vehicle": "Honda Civic",
  "year": 2023,
  "engine": "2.0L I4",
  "schedule": [
    {
      "item": "Automatic transmission fluid",
      "category": "drivetrain",
      "intervalMiles": 30000,
      "intervalMonths": 36,
      "condition": "severe",
      "action": "replace",
      "source": "official manual",
      "citationUrl": "..."
    }
  ]
}

Contract shape

Every interval record should be crawler-ready and citation-safe.

The contract is now concrete enough for scrapers to target directly: a service item, an action, a vehicle fitment, a condition, and a citation. That keeps future ingestion and future products pointed at the same truth format.

{
  "id": "2020-toyota-camry-coolant",
  "brand": "Toyota",
  "model": "Camry",
  "year": 2020,
  "engine": "2.5L I4",
  "drivetrain": "FWD",
  "itemId": "engine-coolant",
  "action": "replace",
  "condition": "both",
  "intervalMiles": 100000,
  "intervalMonths": 120,
  "notes": "Preserve manual wording and repeat interval rules.",
  "sourceName": "Toyota Owner's Manuals and Warranty & Maintenance Guides",
  "citationUrl": "..."
}

First seed set

Start with the highest-demand nameplates.

The first release should concentrate on popular vehicles so interval extraction, QA, and API contracts harden on cars people actually own.

Toyota

Camry

Midsize sedan2000-2026

Toyota

Corolla

Compact sedan/hatchback2000-2026

Ford

F-150

Full-size pickup2000-2026

Ford

Escape

Compact SUV2001-2026

Honda

Civic

Compact sedan/hatchback2000-2026

Honda

CR-V

Compact SUV2000-2026

Chevrolet

Silverado 1500

Full-size pickup2000-2026

Nissan

Altima

Midsize sedan2000-2026

Subaru

Outback

Wagon/crossover2000-2026

Mazda

Mazda3

Compact sedan/hatchback2004-2026

Volkswagen

Jetta

Compact sedan2000-2026

Hyundai

Elantra

Compact sedan2000-2026

Kia

Sportage

Compact SUV2000-2026

Build sequence

Move from trustworthy PDFs to a dependable experience.

1. Crawl official interval sources

Start with owner manuals, maintenance booklets, and OEM support portals. Use a per-brand extractor that can turn PDFs and pages into interval records with citations.

2. Normalize by service item

Map every interval to a service item, make, model, year, engine, drivetrain, and severe-use condition. VIN decoding becomes the matching layer for real users.

3. Publish through a clean API

Expose a simple contract for fluids, wear items, transmission service, conditions, and citations so future services can build on top without scraping again.