2020 Ram 1500 Maintenance Schedule
Photo: Vitali Adutskevich / Pexels
The 2020 Ram 1500 DT represents FCA's modern full-size truck platform with three distinct powertrains—each requiring tailored maintenance. This schedule addresses the 3.6L Pentastar V6, 5.7L HEMI V8, and 3.0L EcoDiesel V6 configurations, accounting for the 8-speed automatic transmission and available 4WD systems that demand additional fluid service intervals.
Service Intervals
| Service | Interval | Est. Cost |
|---|---|---|
| Engine Oil & FilterHEMI V8 uses 0W-20 synthetic; EcoDiesel requires CK-4 diesel oil; Pentastar V6 uses 5W-20 or 5W-30 synthetic depending on climate. | 10,000 mi / 12 mo | $60-$120 |
| Tire RotationRam recommends every 8,000 miles to prevent uneven wear on heavy-duty truck tires and maintain traction. | 8,000 mi | $35-$60 |
| Cabin Air FilterReplace more frequently in dusty conditions or if HVAC airflow diminishes noticeably. | 20,000 mi / 24 mo | $20-$45 |
| Engine Air FilterInspect at every oil change; replace sooner if operating in dusty or off-road environments common with truck use. | 30,000 mi | $25-$50 |
| Brake Fluid FlushDOT 3 or DOT 4 fluid absorbs moisture over time; flushing prevents internal corrosion in ABS components and maintains pedal feel. | 48,000 mi / 48 mo | $90-$150 |
| Brake Pad Inspection & ReplacementInspect annually; replacement typically needed at 40,000-60,000 miles depending on towing frequency and driving style. | 12 mo | $180-$400 |
| Coolant Flush (OAT)Factory-fill OAT coolant is rated for 10 years/100,000 miles; protects aluminum engine components and prevents overheating under load. | 100,000 mi / 120 mo | $120-$200 |
| Transmission Fluid & FilterZF 8HP transmission requires ATF+4 or equivalent; service interval critical for towing or severe-duty use to prevent shift issues. | 60,000 mi | $250-$400 |
| Spark Plugs (V6 & V8 gasoline)Iridium plugs last 100,000 miles on Pentastar and HEMI engines; EcoDiesel has no spark plugs but requires glow plug inspection. | 100,000 mi | $180-$320 |
| Differential Fluid (Rear/Front if 4WD)Rear differential service at 50,000 miles; front differential on 4WD models also requires service to prevent gear wear and noise. | 50,000 mi | $100-$180 |
| Transfer Case Fluid (4WD models)Applies to part-time and full-time 4WD systems; neglect causes binding, difficult shifting, and eventual transfer case failure. | 60,000 mi | $90-$150 |
| EcoDiesel DEF System & DPF ServiceEcoDiesel only: keep DEF topped off; DPF regeneration occurs automatically but may require forced regen if frequent short trips prevent completion. | As needed | $50-$200 |
| Battery Inspection & ReplacementTest annually after 3 years; typical lifespan 4-6 years in moderate climates, less in extreme heat or cold. | 48 mo | $150-$280 |
| Serpentine Belt InspectionInspect for cracks or glazing at every oil change; replacement typically needed around 100,000 miles to prevent sudden failure. | 100,000 mi | $80-$150 |
2020 Ram 1500 Oil Change Interval
The 2020 Ram 1500 oil change interval is every 10,000 miles or 12 months, whichever comes first (estimated cost $60-$120). HEMI V8 uses 0W-20 synthetic; EcoDiesel requires CK-4 diesel oil; Pentastar V6 uses 5W-20 or 5W-30 synthetic depending on climate.
What Happens If You Skip It
- Neglecting 8-speed transmission fluid changes leads to harsh shifting, slipping, and premature valve body failure—a $3,000+ repair on the ZF 8HP unit.
- Skipping differential service on 4WD models causes gear whine, metal shavings in fluid, and eventual axle bearing or ring-and-pinion failure requiring complete differential rebuild.
- Ignoring EcoDiesel DPF regeneration warnings results in clogged particulate filter, limp mode activation, and $2,500+ DPF replacement if forced regen cannot clear blockage.
- Deferred brake fluid flushes allow moisture contamination that corrodes ABS module internals, leading to expensive electronic brake system repairs and compromised stopping power.
- Running HEMI V8 beyond oil change intervals with 0W-20 synthetic causes MDS lifter failure—a known weak point resulting in ticking noise and $2,000-$4,000 engine repairs.
- Skipping transfer case fluid service on 4WD models leads to chain stretch, bearing failure, and complete transfer case replacement costing $2,500-$4,000 in parts and labor.
Common Issues at Higher Mileage — 2020 Ram 1500
HEMI V8 MDS lifter tick or failure, often requiring lifter replacement and camshaft inspection if oil changes were delayed or low-quality oil used.
8-speed transmission shudder or delayed engagement, typically resolved with fluid/filter service or software update if caught early.
EcoDiesel EGR cooler clogging leading to check engine light, reduced power, and potential coolant intrusion if not addressed promptly.
Front differential pinion seal leaks on 4WD models, causing fluid loss and potential bearing damage if not monitored and repaired.
Rear coil spring suspension bushing and multi-link joint wear on heavily loaded or towing-duty trucks, resulting in clunking noises and degraded ride quality.
Water pump weep hole seepage on all engines, signaling impending bearing failure and requiring replacement to prevent overheating.
FAQ
How often does a 2020 Ram 1500 need an oil change?
The 2020 Ram 1500 oil change interval is every 10,000 miles or 12 months, whichever comes first (estimated cost $60-$120). HEMI V8 uses 0W-20 synthetic; EcoDiesel requires CK-4 diesel oil; Pentastar V6 uses 5W-20 or 5W-30 synthetic depending on climate.
What maintenance does a 2020 Ram 1500 need?
The most important 2020 Ram 1500 services: engine oil & filter every 10,000 mi / 12 mo; tire rotation every 8,000 mi; brake fluid flush every 48,000 mi / 48 mo; brake pad inspection & replacement every 12 mo; transmission fluid & filter every 60,000 mi. See the full intervals table above for every service with estimated costs.
What are common Ram 1500 problems at higher mileage?
60,000+ mi: HEMI V8 MDS lifter tick or failure, often requiring lifter replacement and camshaft inspection if oil changes were delayed or low-quality oil used. 80,000+ mi: 8-speed transmission shudder or delayed engagement, typically resolved with fluid/filter service or software update if caught early. 100,000+ mi: EcoDiesel EGR cooler clogging leading to check engine light, reduced power, and potential coolant intrusion if not addressed promptly. 70,000+ mi: Front differential pinion seal leaks on 4WD models, causing fluid loss and potential bearing damage if not monitored and repaired. 90,000+ mi: Rear coil spring suspension bushing and multi-link joint wear on heavily loaded or towing-duty trucks, resulting in clunking noises and degraded ride quality. 120,000+ mi: Water pump weep hole seepage on all engines, signaling impending bearing failure and requiring replacement to prevent overheating.
