Valid

GB 11121-2025Gasoline engine oils (English PDF)

汽油机油

Preview PDF

This is a limited preview

Buy now to download the full PDF (39 pages)

Need quotation for your management?

Get a formal quotation for GB 11121-2025 in 30 minutes.

Issued by

State Administration for Market Regulation; Standardization Administration of China

Level / Type

National · Mandatory

Issue date

June 30, 2025

Implementation date

July 1, 2026

Scope

GB 11121-2025 is the English-translated version of 汽油机油.

GB 11121-2025 specifies the product varieties and designation, technical requirements and test methods, inspection rules, and marking, packaging, storage, transport and delivery acceptance of gasoline engine oils made from base oils blended with additives, for use in automotive spark-ignition four-stroke gasoline engines.

The technical requirements, the core of the document, set the physico-chemical limits and engine test performance for each quality grade and viscosity grade, assessed by a large body of referenced methods: viscosity and viscosity index, low-temperature cranking and pumping, high-temperature high-shear viscosity, Noack and gas-chromatographic volatility, foaming, shear stability, element and sulfated ash content, and engine sequence tests for oxidation, wear, sludge, deposits, rust and fuel economy.

A normative annex gives the viscosity-temperature requirements for SF quality grade oils, and an informative annex lists the technical changes.

It replaces GB 11121-2006 (first issued in 1989, revised in 1995 and 2006); besides structural and editorial changes, the main technical changes are set out in Annex A. Issued on 30 June 2025, in force from 1 July 2026.

Classification: ICS 75.100, CCS E34. The document runs to 39 pages, delivered complete in English translation.

Found what you need?

Document preview — GB 11121-2025

National Standard of the People's Republic of China

ICS: 75.100
Classification: E34
Replacing: GB 11121-2006

Issued by: State Administration for Market Regulation; Standardization Administration of China

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Product types and designation
5 Technical requirements and test methods
6 Inspection rules
7 Marking, packaging, storage, transport and acceptance on delivery
Annex A (informative) Main technical changes of this document compared with GB 11121—2006
Annex B (normative) Technical requirements and test methods for the viscosity-temperature performance of SF quality grade gasoline engine oils
References

3 Terms and definitions

4 Product types and designation

5 Technical requirements and test methods

6 Inspection rules

7 Marking, packaging, storage, transport and acceptance on delivery

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020, Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.

This document replaces GB 11121-2006, Gasoline engine oils. Compared with GB 11121-2006, apart from structural adjustments and editorial changes, the main technical changes are given in Annex A.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying patent rights.

This document was proposed by and is under the jurisdiction of the National Energy Administration.

This document was first issued in 1989, revised for the first time in 1995 and for the second time in 2006; this is the third revision.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 39 pages — is available in the English PDF.

Referenced standards

Normative references

NB/SH/T 0059 · NB/SH/T 0164 · NB/SH/T 0505 · NB/SH/T 0558 · NB/SH/T 0562 · NB/SH/T 0656 · NB/SH/T 0703 · NB/SH/T 0704 · NB/SH/T 0824 · NB/SH/T 0826 · NB/SH/T 0834 · NB/SH/T 0896 · NB/SH/T 0897 · NB/SH/T 0898 · NB/SH/T 0899 · NB/SH/T 0926 · NB/SH/T 0957 · NB/SH/T 0976 · NB/SH/T 6079 · SH/T 0251 · SH/T 0264 · SH/T 0265 · SH/T 0296 · SH/T 0512 · SH/T 0513 · SH/T 0514 · SH/T 0618 · SH/T 0631 · SH/T 0672 · SH/T 0695 · API 1509 · ASTM D6984 · ASTM D8111 · ASTM D8114 · ASTM D8226 · ASTM D8256 · ASTM D8279 · ASTM D8291 · ASTM D8350

Cited by

Similar standards

GB/T 47447-2026|GB/T 47642-2026|GB/T 7597-2026|GB/T 7607-2026|GB/T 8028-2026|GB 11122-2025

How to Download GB 11121-2025

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.