{"vehicle":{"brand":"Nissan","model":"Frontier","segment":"Midsize pickup","modelYears":"2000-2026","sourcePriority":["Nissan USA Owner Manuals","NHTSA VIN Decoder API"],"priorityTier":"expanded","maintenanceHighlights":["engine oil","rear differential fluid","transfer case fluid","coolant"]},"totalScheduleItems":0,"schedule":[],"parsedCoverage":{"totalRecords":8,"availableYears":[2020],"categories":["Drivetrain and transmission","Filters and ignition","Fluids"]},"parsedRecords":[{"id":"2020-nissan-frontier-engine-oil-and-filter-normal","brand":"Nissan","model":"Frontier","year":2020,"engine":"3.8L V6","drivetrain":"4WD","itemId":"engine-oil-filter","action":"replace","condition":"normal","intervalMiles":7500,"intervalMonths":6,"intervalSource":"fixed","extractionMethod":"table-row","parserConfidence":"high","notes":"Nissan Altima engine oil and filter interval for standard driving conditions.","sourceName":"Nissan USA Maintenance 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stress."},"sourceTargetId":"2020-nissan-frontier-spark-plugs","review":null},{"id":"2020-nissan-frontier-engine-air-filter-both","brand":"Nissan","model":"Frontier","year":2020,"engine":"3.8L V6","drivetrain":"4WD","itemId":"engine-air-filter","action":"replace","condition":"both","intervalMiles":30000,"intervalMonths":24,"intervalSource":"fixed","extractionMethod":"table-row","parserConfidence":"high","notes":"Nissan Altima engine air filter replacement interval from the official component page.","sourceName":"Nissan USA Maintenance Schedules","citationUrl":"https://www.nissanusa.com/maintenance-schedules/2020/frontier/components/engine-air-filter/?LocaleID=en_US&RegionID=1","evidenceSnippet":"2020 Nissan Frontier Engine air filter Service & Maintenance Guide Schedule Maintenance Schedule Maintenance 2020 Nissan Frontier Engine air filter Interval and Maintenance Guide Engine air filter Service Intervals * Your Personalized Maintenance Schedule Your Personalized Maintenance Schedule 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