This six-page laminated guide is designed to help consumers understand the API Engine Oil Quality Marks—the API Certification Mark "Starburst," the API Certification Mark "Shield" and the API Service Symbol "Donut"—and the API Service Categories.

API FA-4 and the FA-4 Donut identify certain XW-30 oils specifically formulated for use in select high-speed four-stroke cycle diesel engines designed to meet 2017 model year on-highway greenhouse gas (GHG) emission standards. API FA-4 oils are not interchangeable or backward compatible with API CK-4, CJ-4, CI-4 PLUS, CI-4, and CH-4 oils.

2020年5月1日 · Marketers of engine oil must obtain a license from API to use the API Engine Oil Quality Marks: the API Service Symbol "Donut“, the API Certification Mark "Starburst“, and the API Certification Mark “Shield”. API Engine Oil Quality Marks identify quality motor oils for gasoline- and diesel-powered vehicles.

2021年4月30日 · API Service SP may be licenced for use in the upper portion of the API Service Symbol 'Donut'. The API Certification Mark or ‘Starburst’ Oils displaying this Mark meet the current ILSAC GF-6A engine protection standard and fuel economy requirements of the International Lubricant Specification Advisory Committee (ILSAC), which is a joint ...

2023年5月23日 · The API "Donut" identifies oils that meet current API engine oil standards. It includes the SAE viscosity grade of the oil, API standards met by the oil, and other important performance parameters. The top of the "Donut" displays the …

2020年5月15日 · The API “Donut” is a symbol licensed by the American Petroleum Institute to help ensure consumers purchase motor oil that meets API’s engine oil standards and that the product is subject to the API’s aftermarket monitoring and enforcement program that ensures licensees adhere to program requirements.

This six-page laminated guide is designed to help consumers understand the API Engine Oil Quality Marks—the API Certification Mark “Starburst,” the API Certification Mark “Shield” and the API Service Symbol “Donut”—and the API Service Categories.

Welcome to the Donut API. It is a REST API. You must pass your API key in the Donut-Key HTTP header. The root level of the API is http://donut-api.mit.edu/api and it has the following endpoints are available: /purge - Removal all votes and notification data. Developers can use the API with standard GET requests, or test it using the form below.

2017年10月9日 · “Donuts and Starburst” sounds like what passes for lunch to a busy parts specialist, but in this case, it refers to the American Petroleum Institute (API) symbols and marks used to identify quality lubricants used in gas and diesel engines. For 70 years, the folks at API have been developing motor oil standards.

The API Donut trademark certifies 0W-40 and 5W-40 engine oil. For diesel engines, oils with a high ash content may produce damaging deposits on cylinder head valves and/or after treatment system damage. A maximum sulfated ash content of …