Quick Overview
- Changing the gear oil on your YZ85 is a relatively simple procedure.
- The correct gear oil provides a protective film that reduces friction and wear on the gears and bearings.
- By following the recommendations outlined in this guide, you can select and maintain the correct gear oil for your Yamaha YZ85.
Choosing the right gear oil for your Yamaha YZ85 is crucial to ensure optimal performance and longevity. This blog post will provide you with a comprehensive guide to help you make an informed decision about your YZ85’s gear oil.
Understanding Gear Oil Viscosity
Gear oil viscosity refers to its thickness and resistance to flow. The viscosity rating is typically expressed in SAE (Society of Automotive Engineers) grades, such as 80W-90 or 10W-40.
For the YZ85, Yamaha recommends using gear oil with a viscosity rating of 10W-40. This oil provides adequate lubrication and protection for the gears and bearings, while also allowing for easy shifting.
Gear Oil Formulation
Gear oil is formulated with specific additives to enhance its performance and protect the components it lubricates. These additives include:
- Anti-wear agents: Protect against friction and wear on gear surfaces.
- Extreme pressure (EP) additives: Provide additional protection under high-load conditions.
- Anti-foam agents: Prevent foaming, which can reduce lubrication effectiveness.
Gear Oil Capacity
The Yamaha YZ85 requires approximately 0.7 liters (0.75 US quarts) of gear oil. It’s important to fill the transmission to the correct level to ensure proper lubrication and prevent damage.
Gear Oil Change Interval
The recommended gear oil change interval for the YZ85 is every 10 riding hours or 3 months, whichever comes first. This interval may vary depending on riding conditions and usage.
Recommended Gear Oil Brands
Several reputable brands offer high-quality gear oil suitable for the YZ85, including:
- Yamaha Genuine Oil
- Motul Gear 300
- Red Line Synthetic Gear Oil
- Amsoil Series 2000 Gear Oil
How to Change Gear Oil
Changing the gear oil on your YZ85 is a relatively simple procedure:
1. Remove the drain plug and allow the old oil to drain into a suitable container.
2. Clean the drain plug and washer.
3. Replace the drain plug and washer and tighten to the specified torque.
4. Fill the transmission with the recommended amount of new gear oil.
5. Check the oil level and adjust as necessary.
Importance of Using the Correct Gear Oil
Using the correct gear oil for your YZ85 is essential for the following reasons:
- Protects gears and bearings: The correct gear oil provides a protective film that reduces friction and wear on the gears and bearings.
- Improves shifting: The proper oil viscosity allows for easy shifting and prevents the transmission from sticking.
- Prevents leaks: High-quality gear oil helps prevent leaks from seals and gaskets.
- Extends component life: Using the correct gear oil promotes longevity of the transmission components.
Conclusion: Ensuring Optimal Performance
By following the recommendations outlined in this guide, you can select and maintain the correct gear oil for your Yamaha YZ85. Using the right oil will ensure optimal performance, protect your transmission, and extend the lifespan of your motorcycle.
Answers to Your Most Common Questions
Q: Can I use 10W-50 gear oil in my YZ85?
A: While 10W-50 oil may be compatible with the YZ85, it is not the recommended viscosity rating. Yamaha specifically recommends using 10W-40 gear oil to ensure optimal performance and protection.
Q: How often should I check the gear oil level?
A: It’s a good practice to check the gear oil level before each ride. This will help ensure that the transmission has enough oil and prevent damage from running it low.
Q: Can I mix different brands of gear oil?
A: It’s generally not recommended to mix different brands of gear oil, as they may have different formulations and additives. Mixing oils can potentially lead to reduced performance or compatibility issues.
