Daihatsu Hijet — Oil Change
Oil specs, filter cross-references, capacity, and drain procedure.
Specifications
Capacity (with filter)
3.1 L
Viscosity
5W-30 or 10W-30
Oil Filter Thread
M20 × 1.5 mm
Service Interval
10,000 km or 6 months
Danger:Do not use 15W-40, 20W-50, or any heavy-grade oil. The elevated oil pressure will blow out the front and rear crankshaft seals. Use 5W-30 or 10W-30 only.
Recommended Oil
Modern API SN or SP full-synthetic 5W-30 outperforms the original SE/SF spec and is the recommended choice for preservation. Check the dipstick before every service — heavily carbonized or sludgy oil signals extended drain intervals or bearing wear.
Recommended Engine Oils
| Brand | Part Number | Notes / Info |
|---|---|---|
| Mobil 1 | 5W-30 Full Synthetic | API SP — recommended for long-term preservation |
| Castrol | GTX 5W-30 | API SN — widely available |
| Valvoline | Advanced 5W-30 | API SP full synthetic |
| Pennzoil | Platinum 5W-30 | API SP full synthetic |
Oil Filters
Tip:WIX 51381 and NAPA 1394 are the go-to domestic options. The Toyota 90915-YZZN1 is also a direct fit and is easy to find at any Toyota dealer or online.
Compatible Oil Filters
| Brand | Part Number | Notes / Info |
|---|---|---|
| WIX | 51381 | Primary USDM cross-reference — 20×1.5 mm, 13–19 PSI bypass |
| NAPA Gold | 1394 | Rebranded WIX 51381 |
| Toyota OEM | 90915-YZZN1 | Direct dimensional match — commonly used by importers |
| Suzuki OEM | 16510-81403 | Factory cross-reference per Daihatsu service manual |
| Mazda OEM | AY01-14-300A | Factory cross-reference per Daihatsu service manual |
Drain & Fill Procedure
- Warm the engine for a few minutes — warm oil drains faster and carries contaminants out with it. Shut the engine off.
- Place a drain pan under the drain plug. Remove the drain plug and allow the oil to drain completely.
- Remove the oil filter. Have a rag ready — the filter will still hold oil when you break it loose.
- Lightly oil the gasket on the new filter and thread it on by hand until snug, then tighten a further ¾ turn. Do not use a wrench to tighten.
- Reinstall the drain plug.
- Fill with 3.1 L of the correct oil through the filler cap on top of the engine.
- Start the engine and check for leaks at the filter and drain plug. Shut off and recheck the level on the dipstick after a minute.