Aprilia RS 660: Oil & Maintenance

The Aprilia RS 660 is a thrilling middleweight sportbike that has captured the attention of riders worldwide. Known for its sharp handling, potent performance, and cutting-edge electronics, it's a machine that demands proper care to ensure it continues to deliver that exhilarating experience. One of the most fundamental aspects of maintaining any motorcycle is the oil change, and the RS 660 is no exception. This guide will delve into the specifics of the Aprilia RS 660's engine, the recommended synthetic oil for your machine, and crucial maintenance practices to keep your Italian steed running smoothly.

The Heart of the RS 660: Engine Specifications

At the core of the Aprilia RS 660 lies a revolutionary parallel-twin engine. This compact and powerful unit is a marvel of modern engineering, designed to offer a fantastic blend of performance and usability. Unlike many of its competitors, the RS 660's engine is not just a smaller version of a larger motor; it's a bespoke design from the ground up.

The engine is a 659cc, liquid-cooled, four-stroke, DOHC (Double Overhead Camshaft) unit with a 4-valve per cylinder configuration. This setup allows for efficient combustion and optimal power delivery across the rev range. The bore and stroke are 81 mm and 63.93 mm respectively, contributing to its responsive character.

What sets the RS 660's engine apart is its innovative configuration. It's essentially half of Aprilia's 1077cc V4 engine found in models like the Tuono V4 and RSV4. This design philosophy not only saves development costs but also results in a highly integrated and compact package. The engine is mounted transversely, with the cylinders tilted forward by 22 degrees. This forward lean contributes to a lower centre of gravity, enhancing the bike's agility and handling dynamics.

The engine boasts a 13.5:1 compression ratio, which is relatively high and indicative of its performance-oriented nature. It produces a healthy 100 horsepower at 10,500 rpm and 80 Nm (59 lb-ft) of torque at 8,500 rpm. This power is delivered through a six-speed gearbox featuring Aprilia's Quick Shift system (both up and down), which allows for clutchless gear changes, further enhancing the riding experience and keeping you focused on the road ahead.

Synthetic Oil for Your RS 660: What to Use?

After completing the initial 300 miles (approximately 500 km), it's an excellent time to consider your first oil change. This is a crucial part of the break-in period, ensuring that any microscopic metal particles generated during the initial running-in of the engine are flushed out. For the Aprilia RS 660, using the correct synthetic oil is paramount for optimal engine protection and performance.

Aprilia recommends a high-quality, fully synthetic motorcycle oil. The specific viscosity grade is typically 10W-40. This viscosity offers a good balance of protection at both high operating temperatures and during cold starts. It's essential to choose an oil that meets the JASO MA or MA2 specification. JASO (Japanese Automotive Standards Organization) standards are specifically designed for motorcycle engines, ensuring that the oil is compatible with the wet clutch system, preventing slippage.

Several reputable brands offer excellent 10W-40 fully synthetic motorcycle oils that are suitable for the RS 660. Some popular and well-regarded options include:

Always check your owner's manual for the most up-to-date and specific recommendations from Aprilia. While these are widely accepted choices, the manufacturer's word is final. When purchasing your oil, don't forget to also get a new oil filter. Aprilia typically uses a cartridge-style oil filter, and it's crucial to replace it with each oil change to ensure clean oil circulates through the engine.

The Oil Change Process: A Step-by-Step Overview

While it's always best to consult your owner's manual for detailed instructions, here's a general overview of the oil change process for the Aprilia RS 660. If you're not comfortable performing this yourself, a qualified motorcycle mechanic can handle it for you.

1. Warm Up the Engine: Ride the motorcycle for a few minutes to warm the oil. Warm oil flows more easily, allowing for a more complete drain.
2. Gather Your Supplies: You'll need new synthetic oil (approximately 2.4 litres or 2.5 US quarts, but always check your manual), a new oil filter, a wrench to remove the drain plug, a filter wrench, a drain pan, rags, and gloves.
3. Locate the Drain Plug: The oil drain plug is usually located at the lowest point of the engine's oil sump.
4. Drain the Old Oil: Place the drain pan beneath the drain plug and carefully remove it using the appropriate wrench. Be cautious, as the oil will be hot. Allow the oil to drain completely.
5. Replace the Drain Plug: Once the oil has drained, clean the drain plug and its sealing washer. Reinstall the drain plug and tighten it to the manufacturer's specified torque. Do not overtighten, as this can strip the threads.
6. Remove the Old Oil Filter: Locate the oil filter and use a filter wrench to remove it. Be prepared for a small amount of oil to spill out.
7. Prepare the New Oil Filter: Lightly lubricate the rubber gasket on the new oil filter with a bit of fresh oil. This helps ensure a good seal and makes removal easier next time.
8. Install the New Oil Filter: Screw the new oil filter into place by hand until the gasket makes contact with the engine casing. Then, tighten it an additional 3/4 to 1 full turn by hand, as per the filter manufacturer's instructions. Again, avoid overtightening.
9. Add New Oil: Locate the oil filler cap, usually marked with an oil can symbol. Remove the cap and carefully add the recommended amount of new synthetic oil. Start with slightly less than the full capacity and check the level.
10. Check the Oil Level: After adding the oil, replace the filler cap. Start the engine and let it run for a minute or two. Turn off the engine and wait a few minutes for the oil to settle. Check the oil level using the sight glass or dipstick, as indicated in your owner's manual. Add more oil if necessary, ensuring you don't overfill.

Beyond the Oil Change: Essential RS 660 Maintenance

While the oil change is a cornerstone of motorcycle maintenance, it's just one piece of the puzzle. To keep your Aprilia RS 660 in peak condition, consider these other essential maintenance tasks:

Chain Maintenance

The RS 660 features a chain drive. Regular cleaning, lubrication, and adjustment of the drive chain are critical for its longevity and performance. A dry or poorly lubricated chain will wear out faster, and an improperly tensioned chain can affect handling and safety. Aim to lubricate your chain every 300-500 miles, depending on riding conditions, and check its tension regularly.

Tyre Care

Your tyres are your only contact with the road, so their condition is paramount. Regularly check your tyre pressures and ensure they are set to the manufacturer's recommended levels. Inspect your tyres for any signs of wear, damage, or embedded objects. Proper tyre maintenance not only enhances safety but also improves handling and fuel efficiency.

Brake System

The RS 660 is equipped with a sophisticated braking system. Periodically inspect your brake pads for wear and check your brake fluid levels. Ensure the brake levers and pedals operate smoothly. If you notice any changes in braking performance, such as a spongy feel or reduced stopping power, it's time to have your brakes inspected by a professional.

Coolant Level

As a liquid-cooled machine, the RS 660's cooling system requires attention. Ensure the coolant level in the expansion tank is maintained within the recommended range. Use the correct type of coolant as specified in your owner's manual to prevent overheating.

Air Filter

A clean air filter is essential for optimal engine performance and fuel economy. Depending on your riding environment, you may need to clean or replace the air filter at regular intervals. A clogged air filter can restrict airflow, leading to a loss of power and increased fuel consumption.

Frequently Asked Questions (FAQs)

Q1: How often should I change the oil on my Aprilia RS 660?

A1: It's generally recommended to change the oil and filter every 6,000 miles (10,000 km) or annually, whichever comes first. However, the initial oil change after the break-in period (around 300 miles) is also very important.

Q2: Can I use a 5W-40 oil instead of 10W-40?

A2: While some motorcycle oils might have different viscosity grades, it's best to stick to the manufacturer's recommendation of 10W-40 for the RS 660 unless Aprilia specifies otherwise. Using an incorrect viscosity can affect lubrication and engine protection.

Q3: Do I need a special tool to remove the oil filter?

A3: Yes, a motorcycle oil filter wrench is usually required to remove the oil filter. These are readily available at motorcycle parts stores.

Q4: What is the oil capacity of the Aprilia RS 660?

A4: The oil capacity is approximately 2.4 litres (2.5 US quarts) with a filter change. Always refer to your owner's manual for the exact capacity.

Q5: Is the Aprilia RS 660's engine the same as the Tuono 660?

A5: Yes, the Aprilia RS 660 and the Aprilia Tuono 660 share the same 659cc parallel-twin engine. The tuning and chassis setup differ between the two models.

By understanding your Aprilia RS 660's engine and adhering to a regular maintenance schedule, you can ensure that this incredible machine provides you with countless miles of exhilarating riding. Regular checks and using the correct, high-quality fluids are key to a long and happy ownership.