Why is this oil rated only for motorcycles? Won't it perform as well as previous Castrol 20-50 synthetics in my bal. and bluprinted auto engine?

It is not for Car engines. It is formulated without certain friction modifiers to keep wet clutches gripping. Oil change intervals for motorcycles are closer together for this reason. Do not use it in your car.

How often do u change synthetic oil. In 2012 Flhtk?

I would stick to the 3000 mile change as called for in the owner's manual. I know some people say you can go longer with synthetic but I would not. Saying that, much of it has to do with if you do a lot of stop and go city driving vs to hwy, in town driving can stress the bike more than hwy. Oil changes are cheap in the big scheme of things, you should always check your oil and alot can be told by the color and smell. Hope this helps, drive safe.

Will this oil work for both a ducati monster dry clutch (m900) and wet clutch (620 dark)? thanks!

The dry clutch doesn't get engine oil so if the engine is recommended for full synthetic there's no problem for the "dry" clutch. As far as the 620 goes if the mfr recommends full synthetic then go with it.

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Castrol 06113 Power RS 5W-40 4-Stroke Motorcycle Oil - 1 Quart, (Pack of 6)

Product ID: 366608934

Details

Brand
Castrol
Liquid volume
192 Fluid
Package information
Bottle
Vehicle service type
Motorcycle
Viscosity
5W-40

🔥Race-derived formula boosts max acceleration

⚙️Trizone tech protects engine, clutch & gearbox

🌡️Extreme temp stability for air & water-cooled engines

Description

🏍️ Power your ride with precision-engineered protection!

THERMAL MASTERY - Exceptional high-temp stability ensures consistent performance in both air-cooled and water-cooled engines.
TRIPLE ZONE PROTECTION - Engine, clutch, and gearbox safeguarded with advanced Trizone technology for peak durability.
RACE PROVEN PERFORMANCE - Harness race-derived formula engineered to maximize engine acceleration and responsiveness.
SHEAR STABILITY EXCELLENCE - Maintains viscosity under stress to prevent breakdown and extend engine life.
CERTIFIED QUALITY ASSURANCE - Exceeds API SL and JASO MA-2 standards for trusted, professional-grade motorcycle oil.

Castrol 06113 Power RS 5W-40 is a premium full synthetic 4-stroke motorcycle oil featuring Trizone technology that protects engine, clutch, and gearbox. Designed with race-derived formula for maximum acceleration and extreme temperature stability, it exceeds API SL and JASO MA-2 standards, ensuring superior shear stability and reliable performance under demanding riding conditions.

Specifications

Asin	B008MISDII
Automotive Fit Type	Vehicle Specific Fit
Brand Name	Castrol
Compatible With Vehicle Type	Motorcycle
Container Type	Bottle
Customer Reviews	4.8 4.8 out of 5 stars (979) 4.8 out of 5 stars
Global Trade Identification Number	00079191061138, 00079191215975
Item Weight	0.01 Ounces
Liquid Volume	192 Fluid Ounces
Manufacturer	Castrol
Manufacturer Part Number	06113
Model Number	6113
Number Of Packs	6
Sae J300 Viscosity Grade	5W-40
Size	1 Quart - 6 Pack
Unit Count	5678.1177 millilitre
Upc	079191215975 079191064108 079191061138
Viscosity Level	Medium

Reviews

User

When you find this on sale, jump on it!

Incredible value. Up there with top brands costing nearly twice as much. Does what the other best brands do: preserves top mileage, smooth operation, protects your engine, and pours exceptionally smoothly. My usage: BMW K1600GT.

8.08.2026

User

Best oil for BMW Motorcycles.

I have purchased this oil for my 2007 BMW K1200GT several times. It's much less expensive on Amazon compared to dealership prices. It's exactly what the manufacturer recommends and my motorcycle really responds well to it. I've used it for over 30,000 miles. My engine, clutch ,and transmision are integral so, this is also clutch oil technically. I would not use anything else in my BMW motorcycle.Just repurchased this item. Using it on a 2007 BMW K1200GT with 75,000 miles. This is excellent oil for this motorcycle. I have used it exclusively since 42,000 miles/December 2018.

5.12.2023

User

I always use this in my 2010 BMW S 1000 RR

I always use this in my 2010 BMW S 1000 RR. I also use Castro products in my cars and trucks.

24.08.2026

User

Best value for the money

Everything you would expect from Castrol oil

31.01.2026

User

My bikes seem to like it.

I use it in several bikes. I have not had any issues with it.

31.03.2026

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