Is Choosing Thicker Repsol Oil Always Better for Scooters? Fact or Myth?

Repsol is a world-leading lubricant brand with a diverse product range and distinctive characteristics. So, is it true that the thicker the Repsol oil you choose for scooters, the better? This is a concern that many Huynh Chau customers have when selecting lubricant for their scooters. To answer this question, we invite you to explore the following article with us.

1. Choose lubricant with viscosity suitable for the engine

The viscosity of lubricant is measured by viscosity index. The higher the index, the thicker the lubricant and vice versa (for example: 50-grade oil is thicker than 40-grade). Many customers believe that the thicker the lubricant (higher viscosity index), the better it is and the easier it lubricates. However, this is a dangerous misconception.

Choosing thicker Repsol scooter oil is a common misconception

The selection of viscosity for Repsol scooter lubricant must depend on many factors such as: engine type, weather conditions, operating capability, activity frequency, etc. For older motorcycles or those frequently operating at high intensity, thicker oil (50-grade) should be chosen to increase sealing capability of engine components. For new-generation scooters that only operate in the city, thinner lubricant (40-grade viscosity) should be used to reduce friction and save fuel.

Additionally, you can use 30-grade oil for your scooter during the first 1,000 kilometers. At this point, engine components are still tight and require thinner oil for more effective lubrication.

See more: What is lubricant viscosity? Is it important?

2. Excessively thick lubricant may affect lubrication speed

Under normal temperature conditions, excessively thick scooter lubricant (high viscosity) will not be flexible enough to move and fill the gaps between engine components. Slow flow rate causes the lubricant to not pump up quickly when the engine starts, resulting in components not being effectively lubricated.

Additionally, excessively thick lubricant causes the engine to expend more energy to pump the oil, and operating temperature will also increase. This increases fuel consumption and reduces engine performance efficiency, and can easily create harmful deposits.

Using excessively