Complete Oil Specifications
Your 2021 Honda Accord 1.5T requires 0W-20 full synthetic oil for optimal turbocharged engine performance and fuel efficiency.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 0W-20 |
| API Rating | SP, SN |
| ILSAC Rating | GF-6A |
| Capacity (with filter) | 3.7 quarts |
| Oil Filter | Honda 15400-PLM-A02 |
| Normal Interval | Maintenance Minder (oil life monitor) max 1 year |
Why 0W-20 is Essential for the Accord’s Turbocharged Engine
The 1.5T engine features Honda’s advanced turbocharger technology that demands quick-flowing, low-viscosity oil. 0W-20 synthetic provides instant cold-start protection while maintaining optimal pressure at high temperatures and boost levels.
Using incorrect oil will:
- ❌ Reduce turbocharger lifespan due to inadequate bearing lubrication
- ❌ Decrease fuel economy by 2–3 MPG
- ❌ Void Honda’s powertrain warranty
Honda-Approved Oil Brands
-
✅ Honda Genuine Motor Oil 0W-20
-
✅ Mobil 1 Advanced Fuel Economy 0W-20
-
✅ Castrol Edge 0W-20
-
✅ Pennzoil Platinum 0W-20
-
✅ Valvoline Advanced Full Synthetic 0W-20
All oils must meet API SP (or SN) and ILSAC GF-6A. Full synthetic is mandatory — conventional oil will not provide adequate turbo protection.
Severe Service Check
Maintenance Minder will call for earlier oil changes when you:
- Make frequent short trips under 5 miles
- Operate in extreme temperatures (below 0°F or above 90°F)
- Drive in stop-and-go traffic regularly
- Use E85 fuel
- Drive in dusty or mountainous conditions
Installation Details
Drain Plug Torque: 30 ft-lbs The Accord has an aluminum oil pan — always use a torque wrench to avoid stripping threads.
OEM Filter: Honda 15400-PLM-A02
Aftermarket Filters:
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Mobil 1 M1-110A
-
K&N HP-1010
-
Fram XG10575
Pro Tip: The oil filter is accessible from the top of the engine bay, making this one of the more DIY-friendly oil changes.
FAQs
What oil does a 2021 Honda Accord 1.5T take? 0W-20 full synthetic meeting API SP or SN and ILSAC GF-6A.
How many quarts does it need? 3.7 quarts with a new filter.
Can I use 5W-20 or 5W-30? No. Honda specifically requires 0W-20 for the turbocharged engine. Using thicker oil risks turbocharger damage and voids the warranty.
Is synthetic oil required? Yes. Honda mandates full synthetic 0W-20 for all turbocharged Accord models.
How often should I change the oil? Follow the Maintenance Minder on the dashboard and do not exceed 1 year between changes.
Need these specs on your phone? Download OilFinderPro app for offline access and oil change reminders.
Last verified: 2026-04-06 | Source: OEM Owner’s Manual