Complete Oil Specifications
Your 2023 Opel Mokka 1.2 Turbo requires 5W-30 low-SAPS full synthetic oil meeting the PSA B71 2312 specification and ACEA C2 standard.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 5W-30 |
| PSA Standard | PSA B71 2312 / ACEA C2 |
| Capacity (with filter) | 4.2 quarts |
| Oil Filter | Opel/Stellantis 3647177 (also cross-referenced as PSA 1109AL / 9644885480) |
| Normal Interval | 12000 miles or 1 year |
Why PSA B71 2312 Is Non-Negotiable
Since Stellantis’s formation, the Mokka shares its EB2ADTS 1.2 PureTech engine directly with PSA-brand vehicles like the Peugeot 308. This turbocharged 3-cylinder runs its timing belt submerged in oil (a “wet belt”) instead of a dry chain — a compact, quiet design that requires oil formulated not to attack the belt’s rubber compound. PSA B71 2312 is validated specifically for this wet-belt architecture, and the low-SAPS ACEA C2 classification also protects the gasoline particulate filter (GPF).
Using incorrect oil will:
- ❌ Dissolve the timing belt’s elastomer, causing rapid wear and potential catastrophic failure
- ❌ Deposit ash in the GPF, triggering warning lights and expensive filter replacement
- ❌ Cause abnormal oil consumption in this small-displacement turbocharged engine
Opel-Approved Oil Brands
-
✅ Total Quartz Ineo EcoB 5W-30 (PSA B71 2312)
-
✅ Castrol Edge 5W-30 C2
-
✅ Shell Helix Ultra ECT C2 5W-30
-
✅ Mobil 1 ESP Formula 5W-30
-
✅ Liqui Moly Special Tec F 5W-30
Verify the label shows PSA B71 2312 — Opel’s own dexos-branded oils do not cover this Stellantis-era PSA engine; only PSA B71 2312 / ACEA C2 oils are correct. Stellantis has since introduced a newer FPW9.55535/03 (ACEA C3/API SN Plus) approval for some 1.2 PureTech builds — confirm which approval applies to your specific VIN and maintenance plan before buying oil.
Severe Service Check
You need the 6000-mile interval if you:
- Drive predominantly short urban trips under 5 miles
- Frequently drive in stop-and-go city traffic
- Experience repeated cold starts in winter
- Drive on unpaved or dusty roads regularly
Installation Details
Drain Plug Torque: 15 ft-lbs (20 Nm)
Always replace the aluminum drain plug sealing washer — it is crushed during tightening and cannot seal reliably if reused.
OEM Filter: Opel/Stellantis 3647177 (also cross-referenced as PSA 1109AL / 9644885480)
Aftermarket Filters:
- Mann-Filter W 7058
Pro Tip: Since the 2020 redesign, the Mokka shares its PSA-sourced EB2ADTS platform with the Peugeot 208/308 and Citroën C3/C3 Aircross — parts and oil specs are interchangeable across these Stellantis siblings.
FAQs
What oil does a 2023 Opel Mokka 1.2 Turbo take?
5W-30 full synthetic oil meeting PSA B71 2312 and ACEA C2.
How many quarts does it need?
4.2 quarts with a new filter, 3.9 without.
Is this the same engine as the old GM-era Mokka?
No. The pre-2020 Mokka used a GM-sourced engine requiring dexos2. The current Stellantis-era Mokka uses the PSA PureTech engine and requires PSA B71 2312 instead.
Can I use a dexos-approved oil?
No. dexos1/dexos2 chemistry is not validated for this PSA wet-belt engine — use only PSA B71 2312 / ACEA C2 oil.
How often should I change the oil?
Every 12000 for normal driving, or every 6000 for severe service.
Last verified: 2026-07-14 | Source: 2023 Opel Mokka Owner’s Manual (EB2ADTS engine code and filter confirmed via MANN-FILTER catalogue; oil approval should be checked against VIN — Stellantis has introduced newer FPW9.55535/03 ACEA C3 approvals for some PureTech builds that may supersede B71 2312)