In single-brand championships, the regulations require the use of certain components or accessories. In most cases, these “regulatory requirements” also include the use of a specific lubricating oil for the preparation of the mixture, of which fixed usage percentages or maximum usage limits are also defined. In this article we have analysed the regulations of the four most common single-brand championships (with 2-stroke engines) (Easykart, IAME Series, ROK Cup, Rotax MAX Challenge) to understand which products are indicated and above all, where possible, what the usage percentages recommended by the winning teams are.
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