Klotz 6 Quart 20W-40 Synthetic Oil Change Kit for Indian Thunderstroke

In this review the Klotz 6 Quart 20W-40 Synthetic Oil Change Kit is evaluated as a complete service solution for Indian V-Twin motorcycles. The bottom line: this kit is for owners who want an engine- and transmission-friendly oil with proper detergency and a straightforward set of components to complete a routine change. Our review finds the Klotz formulation particularly useful for Thunderstroke engines because it targets oxidation control, piston ring seal and shifting smoothness while including an oil filter and crush washers so there is little shopping around to do.

Key Features

• Engine-specific formulation: The oil is formulated for Indian V-Twin engines to provide outstanding oxidation resistance and prevent wear to both engine and gear hardware.
• High-quality additive package: Advanced polymers and base oils improve piston ring seal and help maintain power and transmission efficiency under high-heat conditions.
• Friction-modifying chemistry: Friction reducers help lower operating temperature and contribute to smoother shifting during extended runs.
• Detergents and dispersants: Built-in detergents keep the engine clean and help mitigate deposit formation so the motorcycle runs more like new between services.
• Complete kit contents: Includes 6 quarts of 20W-40 multi-viscosity synthetic oil, one Hiflofiltro oil filter (HF-175), and two Cometic copper washers for a single drain and fill service.

Who It's For

The kit is ideal for owners of Indian motorcycles with Thunderstroke or compatible V-Twin engines who prefer a purpose-formulated lubricant and want a ready-to-use service pack with filter and crush washers included. Riders who value detergency, oxidation stability and improved shifting under heat will find the formulation especially relevant.

It is less suitable for riders who require a different viscosity or non-synthetic oil, or for motorcycles outside the Indian V-Twin compatibility list. Also, those who only need a single quart or who already have aftermarket filters on hand may find the six-quart volume more than necessary.

Pros & Cons

Pros

• Engine-specific 20W-40 synthetic oil that targets oxidation control and wear prevention.
• Complete kit with Hiflofiltro HF-175 and two Cometic copper washers simplifies a full service.
• Detergents and dispersants in the formula help keep engines clean and reduce deposit buildup.
• Customers report smooth shifting and good value for money from the package.

Cons

• Six-quart quantity is overkill for someone who only needs a partial top-up or a single quart.
• Formula is tailored to Indian V-Twins, so riders of unrelated bikes should verify compatibility before use.

Specifications

Brand	Klotz
Kit contents	6 quarts 20W-40 oil, Hiflofiltro HF-175, 2 Cometic copper washers
Oil viscosity	20W-40 multi-viscosity synthetic
Application	Indian Thunderstroke V-Twin motorcycles
Performance claim	Oxidation resistance, detergency, improved piston ring seal
Industry spec	Meets JASO MA2 performance requirements

Our Verdict

The Klotz 6 Quart 20W-40 Synthetic Oil Change Kit is a practical, well-specified service pack for Indian V-Twin owners who want an oil that emphasizes oxidation control, cleanliness and smoother shifting. Including the HF-175 filter and copper washers makes it a convenient value buy for a full service, and the formulation is a sensible match for Thunderstroke engines seeking durable protection and transmission efficiency.

Frequently Asked Questions

Is this oil compatible with other Indian models?
Yes, the kit is intended for a range of Indian V-Twin models listed for Thunderstroke compatibility; check your model year against the manufacturer compatibility list before use.

Does the kit include the drain plug washers?
Yes, two Cometic copper washers are included to replace crush washers during the drain and refill.

Will this improve shifting performance?
Customers report smoother shifting due to the additive package and friction-modifying chemistry, particularly during high-heat operation.