{
  "slug": "paccar-mx13-oil-capacity",
  "title": "PACCAR MX-13 Oil Capacity",
  "description": "PACCAR gives the MX-13 oil system capacity as 42 U.S. quarts on its EPA 2024 spec sheet, with an oil and filter interval that depends on idle time and duty.",
  "track": "maintenance",
  "kind": "article",
  "isRegulatoryAdjacent": false,
  "publishedAt": "2026-10-19",
  "cfr": [],
  "related": [
    "diesel-engine-pm-heavy-trucks",
    "cummins-x15-oil-capacity",
    "detroit-dd13-dd15-oil-capacity",
    "cummins-b67-oil-capacity",
    "volvo-d13-mack-mp8-oil-capacity",
    "detroit-series-60-valve-adjustment",
    "diesel-engine-oil-and-fluids-maintenance"
  ],
  "topics": [
    "engine"
  ],
  "nextStep": {
    "kind": "start",
    "target": "/start",
    "text": "See how a PM record is sent to your customer"
  },
  "sources": {
    "citations": [],
    "bcpRole": "Blue Collar Parts records the work and sends the report to your customer. It does not perform, certify or approve inspections.",
    "reviewed": "2026-10-19",
    "reviewedEdition": null,
    "reviewedText": "Reviewed 2026-10-19"
  },
  "url": "https://shopbluecollarparts.com/kb/paccar-mx13-oil-capacity",
  "markdownUrl": "https://shopbluecollarparts.com/kb/paccar-mx13-oil-capacity.md",
  "body": "**PACCAR's MX-13 EPA 2024 specification sheet gives the oil system capacity as \"42 U.S. QTS.\"** The sheet does not break that figure down by oil pan. Confirm the capacity for the specific engine in the MX engine operator's manual before filling.\n\n## The figure and where it comes from\n\nThe *MX-13 EPA 2024* specification sheet from PACCAR (form 2024MX13SPEC), published on [peterbilt.com](https://www.peterbilt.com/static-assets/documents/resources/EPA-MX-13-Spec-Sheet_2024_English.pdf), lists \"OIL SYSTEM CAPACITY 42 U.S. QTS.\" It applies to the EPA 2024 MX-13. An MX-13 certified to another emissions year has its own documentation.\n\n## How often is the oil changed on an MX-13?\n\nThe same sheet gives the oil and filter interval in miles (and kilometers) by duty:\n\n- Normal/Line Haul, under 20% idle time: 75,000 (120,000 km)\n- Normal/Line Haul, over 20% idle time: 50,000 (80,000 km)\n- Severe/Vocational Duty: 30,000 (48,000 km)\n\nIdle time is part of how the sheet picks the interval, so a truck that idles a lot falls into a shorter one even on line haul. The sheet says to \"Reference MX Engine Operators Manual for engine maintenance requirements.\"\n\n## Confirm it for your engine\n\nConfirm the capacity, the oil specification and the interval for the engine's serial number and build in the MX engine operator's manual, or with a PACCAR engine dealer.\n\n## What should the service record show?\n\nAn MX-13 oil service record should show:\n\n- the date and the mileage or hours;\n- the duty and idle-time category the interval was based on;\n- the oil grade and the quantity added;\n- the filter part number;\n- the condition of the oil and filter that came out.\n\n## Log the oil service in Blue Collar Parts\n\nThe truck PM form's **Engine Oil & Filter** section records the service and what was found, and the finished visit becomes the record your customer receives.\n\n---\n\n*This page states manufacturer specifications and is not a service manual. Confirm every figure for your engine's serial number and build against PACCAR's current service documentation before servicing it. Preventive maintenance is not a federal annual inspection and does not establish regulatory compliance.*",
  "license": "CC BY 4.0",
  "licenseUrl": "https://creativecommons.org/licenses/by/4.0/"
}