Standard Test Method for Evaluation of Engine Oil Aeration Resistance in a Caterpillar C13 Direct-Injected Turbocharged Automotive Diesel Engine
|Publication Date:||1 December 2019|
|ICS Code (Lubricants, industrial oils and related products):||75.100|
This test method evaluates an engine oil's resistance to aeration in automotive diesel engine service. It is commonly referred to as the Caterpillar-C13 Engine-Oil Aeration Test (COAT). The test is conducted under high-engine-speed (1800 r⁄min), zero-load conditions using a specified Caterpillar 320 kW, direct-injection, turbocharged, after-cooled, six-cylinder diesel engine designed for heavy-duty, on-highway truck use. This test method was developed as a replacement for Test Method D6894.
NOTE 1-Companion test methods used to evaluate engine oil performance for specification requirements are discussed in the latest revision of Specification D4485.
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*A Summary of Changes section appears at the end of this standard