What does non-standard oil mean?
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Non-standard oil refers to specially manufactured oil products designed to meet specific working environments but do not comply with national standards. Common examples include non-standard diesel and non-standard gasoline. Taking non-standard diesel as an example, here is a detailed introduction: Production method: Imported No. 180 fuel oil is subjected to simple distillation to produce diesel, and then some additives are added to improve certain quality indicators. Initially, all quality indicators of such non-standard diesel meet the current national standards. However, the major drawback of this type of oil is that its storage period is only about 20 days, after which it rapidly oxidizes and turns black. Additionally, its sulfur content exceeds the standard. Hazards: Causes diesel vehicles to experience knocking, leading to severe mechanical wear, difficulty in cold starts, increased fuel consumption, and black smoke emissions. It also generates deposits and gums, clogging vehicle filters, forming large amounts of carbon deposits in the combustion chamber, causing piston sticking and increased wear. High sulfur content not only leads to corrosion and wear in the engine system but also generates acid rain in the atmosphere, significantly increasing particulate matter (PM) emissions, reducing the efficiency of diesel engine emission treatment systems, poisoning them, or even causing them to fail.