Complete Oil Specifications
Your 2023 Lexus GX 460 with the 4.6L 1UR-FE V8 requires 0W-20 full synthetic oil meeting API SP / ILSAC GF-6A. The 1UR-FE is Toyota’s flagship naturally aspirated V8 — a dual overhead cam, 32-valve engine found in both the GX 460 and the Land Cruiser 200. It is known for exceptional durability and refinement, and its large 8.2-quart sump supports Lexus’s 10,000-mile change intervals.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 0W-20 |
| API Rating | API SP |
| ILSAC Rating | GF-6A |
| Capacity (with filter) | 8.2 quarts |
| Oil Filter | Toyota/Lexus 90915-YZZD1 |
| Normal Interval | 10000 miles or 1 year |
Why 0W-20 for the 1UR-FE V8
The 1UR-FE uses Toyota’s VVT-i (Variable Valve Timing with intelligence) on both intake and exhaust camshafts, with eight individual hydraulic cam phasers requiring fast oil pressurization. Despite displacing 4.6 liters, this engine specifies 0W-20 — not the heavier weights common in older V8s — because modern machining tolerances and full synthetic chemistry provide sufficient film strength at the lower viscosity. The large sump volume compensates by keeping oil temperatures lower and extending drain intervals.
Using incorrect oil will:
- ❌ Delay VVT-i hydraulic phaser actuation on cold starts, causing timing rattle
- ❌ Increase the V8’s inherent fuel consumption beyond the expected 15 MPG city figure
- ❌ Risk warranty issues on the 1UR-FE’s dual VVT-i system
Lexus-Approved Oil Brands
-
✅ Lexus Genuine Motor Oil 0W-20
-
✅ Toyota Genuine Motor Oil 0W-20
-
✅ Mobil 1 Extended Performance 0W-20
-
✅ Pennzoil Ultra Platinum Full Synthetic 0W-20
-
✅ Castrol Edge Full Synthetic 0W-20
Toyota and Lexus genuine oil is optimized for the 1UR-FE’s VVT-i system. Third-party oils must carry the API SP / ILSAC GF-6A starburst.
Severe Service Check
Use the 5000 schedule if you:
- Regularly tow a trailer (GX 460 tow rating: 6,500 lbs)
- Navigate technical off-road terrain, rock crawling, or steep grades with Kinetic Dynamic Suspension System (KDSS) active
- Operate in extreme temperatures — desert summers or sub-zero winters
- Drive primarily in urban stop-and-go traffic
Installation Details
Drain Plug Torque: 30 ft-lbs
Replace the aluminum crush washer at every change. The 1UR-FE oil pan is cast aluminum — use a torque wrench.
OEM Filter: Toyota/Lexus 90915-YZZD1
Aftermarket Filters:
-
Mobil 1 M1-110A
-
WIX 57356
-
K&N HP-1010
Pro Tip: The GX 460 holds 8.2 quarts — more than most owners expect. Keep a full extra quart in the trunk for off-road trips, as steep inclines can temporarily affect oil level readings on the dipstick.
FAQs
What oil does a 2023 Lexus GX 460 take?
0W-20 full synthetic meeting API SP / ILSAC GF-6A.
How many quarts does the GX 460 4.6L V8 need?
8.2 quarts with a new filter, 8.0 without.
Why does a big V8 use 0W-20?
Modern 0W-20 full synthetics maintain sufficient film strength at operating temperature for the 1UR-FE’s bore and stroke. The benefit is measurably lower friction losses and better cold-start protection compared to older 5W-30 specs.
Can I use 5W-30 for off-road use?
Lexus does not recommend it. Stick to 0W-20 and shorten your interval to 5,000 miles if you regularly do demanding off-road driving.
How often should I change the oil?
Every 10000 under normal conditions. Monitor the Lexus Maintenance System reminder.
Need these specs on your phone? Download OilFinderPro app for offline access and oil change reminders.
Last verified: 2026-04-12 | Source: 2023 Lexus GX Owner’s Manual (OM60L09U)