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repair and maintenance

What is octane?

1. Introduction by a standard fuel mixture of isooctane and n-heptane composition. Isooctane as excellent antiknock standard octane number is set to 100; n-heptane in… Read More »What is octane?

What is coolant?

1, the coolant composition recommended application by the coolant water, antifreeze, three parts of additives, can be divided into different components according antifreeze alcohol type,… Read More »What is coolant?