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 Power1 4T 5W-40 完全合成オートバイオイル 1クォート 6本パック

Product ID: 725640101

Details

Brand
Castrol
Liquid Volume
192 Fluid
Package Information
Bottle
SAE J300 Viscosity Grade
5W-40
Vehicle Service Type
Sport

⚡Race-derived formula maximizes acceleration

🔥Extreme temp stability for air & water-cooled engines

🛡️Trizone tech protects engine, clutch & gearbox

$523.70

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Description

🏍️ Power your ride with precision-engineered performance!

THERMAL MASTERY - Maintains optimal viscosity under extreme heat for both air and water-cooled engines.
TRIPLE ZONE PROTECTION - Safeguards engine, clutch, and gearbox simultaneously for ultimate durability.
SHEAR STABILITY EXCELLENCE - Prevents viscosity breakdown ensuring consistent performance mile after mile.
RACE PROVEN ACCELERATION BOOST - Leverages motorsport tech to unleash peak engine power on every ride.
CERTIFIED PERFORMANCE STANDARDS - Exceeds API SL and JASO MA-2 for trusted, top-tier quality.

Castrol Power1 4T 5W-40 is a premium fully synthetic motorcycle oil featuring advanced Trizone technology that protects the engine, clutch, and gearbox. Designed with race-derived formulas, it maximizes acceleration and offers exceptional thermal stability for both air and water-cooled engines. This oil surpasses industry standards API SL and JASO MA-2, ensuring reliable, high-performance lubrication under the toughest riding conditions.

Reviews

B**.

Good oil

Great transaction thank you

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B**L

Best value for the money

Everything you would expect from Castrol oil

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K**L

Great Oil for a K1600

Does great in my K1600!

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R**D

Hard to find but Amazon had it!

Needed this for my 2015 Vespa Primavera 50. No one locally had it. It’s perfect !

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R**R

My bikes seem to like it.

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

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$523.70

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Customer service was outstanding when I had questions about the product.

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Manufacturer	Castrol
Brand	Castrol
Model	6113
Product Dimensions	22.86 x 10.16 x 5.08 cm; 0.28 g
Item model number	6113
Item Dimensions L x W x H	22.9 x 10.2 x 5.1 cm
Viscosity	5w-40
Item Weight	0.28 g

Castrol Power1 4T 5W-40 完全合成オートバイオイル 1クォート 6本パック

Details

Details

Description

Specifications

Reviews

Common Questions