Complete Oil Specifications
Your 2022 Opel Astra K 1.2 Turbo 130 requires 5W-30 full synthetic oil meeting the GM dexos1 Gen 2 specification and ACEA A5/B5 standard.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 5W-30 |
| GM Standard | GM dexos1 Gen 2 / ACEA A5/B5 |
| Capacity (with filter) | 5.0 quarts |
| Oil Filter | Opel 650477 |
| Normal Interval | 10000 miles or 1 year |
Why GM dexos1 Gen 2 Matters for the L3T
The L3T is a small-displacement turbocharged 3-cylinder operating at high specific output. GM’s dexos1 Gen 2 specification — designed specifically for gasoline-powered GM engines — mandates Low-Speed Pre-Ignition (LSPI) protection. LSPI is a destructive spontaneous ignition phenomenon that occurs in small turbocharged direct-injection engines under low-speed, high-torque conditions. Non-dexos1 oils, including dexos2 (which is formulated for diesel and older gasoline engines), lack the additives that suppress LSPI and can cause piston cracking.
Using incorrect oil will:
- ❌ Increase LSPI risk, potentially cracking pistons under hard acceleration from low RPM
- ❌ Fail to provide the oxidation resistance required for GM’s extended drain intervals
- ❌ Invalidate GM powertrain warranty coverage for engine failures
Opel-Approved Oil Brands
-
✅ Castrol EDGE 5W-30 LL (GM dexos1 Gen 2 approved)
-
✅ Mobil 1 ESP 5W-30
-
✅ Shell Helix Ultra 5W-30
-
✅ Liqui Moly Longtime High Tech 5W-30
-
✅ Total Quartz 9000 Future GF5 5W-30
Confirm GM dexos1 Gen 2 approval on the label. Standard ACEA A5/B5 without dexos1 certification is not a sufficient substitute for this engine.
Severe Service Check
You need the 5000-mile interval if you:
- Drive predominantly short trips under 5 miles
- Experience frequent stop-and-go city traffic
- Operate in extreme heat or cold regularly
- Use the vehicle for towing or sustained high-load driving
Installation Details
Drain Plug Torque: 18 ft-lbs (25 Nm)
OEM Filter: Opel 650477
Aftermarket Filters:
-
Mann-Filter W 712/75
-
Mahle OC 1004
-
WIX 51394
Pro Tip: The L3T 3-cylinder produces a distinctive cold-start rumble that settles within 30 seconds as oil pressure builds. This is normal piston rocking characteristic of 3-cylinder architecture, not an oil issue — but it underscores why 5W-30 with fast cold-flow is specified.
FAQs
What oil does a 2022 Opel Astra 1.2 Turbo take?
5W-30 full synthetic oil meeting GM dexos1 Gen 2 and ACEA A5/B5.
How many quarts does it need?
5.0 quarts with a new filter, 4.7 without.
Can I use dexos2 instead of dexos1?
No. Dexos2 is designed for diesel engines and older petrol applications. It lacks the LSPI inhibitor package required for the direct-injection turbocharged L3T and could cause engine damage.
Is synthetic oil required?
Yes. GM mandates full synthetic oil for dexos1 Gen 2 compliance and for the 10,000-mile service interval.
How often should I change the oil?
Every 10,000 miles or 1 year for normal driving. Every 5,000 miles for severe or short-trip conditions.
Need these specs on your phone? Download OilFinderPro app for offline access and oil change reminders.
Last verified: 2026-05-21 | Source: 2022 Opel Astra K Owner’s Manual