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Standard Test Method for Determination of Fuel Dilution for In-Service Engine Oils by Gas Chromatography
STANDARD published on 1.10.2014
Designation standards: ASTM D7593-14
Publication date standards: 1.10.2014
The number of pages: 9
Approximate weight : 27 g (0.06 lbs)
Country: American technical standard
Category: Technical standards ASTM
diesel fuel, fuel dilution, gas chromatography, lubricating oil, ICS Number Code 75.100 (Lubricants, industrial oils and related products), 75.160.20 (Liquid fuels)
|Significance and Use|
5.1 Some fuel dilution of in-service engine oil is normal under typical operating conditions. However, excessive fuel dilution can lead to decreased performance, premature wear, or sudden engine failure. This test method provides a means of quantifying the level of fuel dilution, allowing the user to take necessary action. This test method does not purport to accurately quantify the specific fuel present in the in-service lubricant samples due to limitations associated with the aging and degradation of the fuel in the crankcase. Rather, quantification of diesel fuel is normalized using a simulated aged fuel.
1.1 This test method covers the determination of fuel dilution for in-service engine oil by gas chromatography.
1.2 Analysis can be performed directly by this test method without pretreatment or dilution of the sample.
1.3 There is no limitation for the determination of the dilution range, provided the amount of sample is within the linear range of the gas chromatograph detector. However, sample dilution can add potential error to the result and may affect the precision obtained as compared to the values presented in Section , which were obtained with no dilution.
1.4 This test method covers a quantitation range up to 10 % (m/m) for diesel and biodiesel, and up to 5 % (m/m) for gasoline.
1.5 The values stated in SI units are to be regarded as standard. Where non-SI units are provided, they are shown in parentheses.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
|2. Referenced Documents|
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