6 Best Alternatives to the Mayhems X1 Premixed Coolant (5L, (2026)
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The Mayhems X1 Premixed Coolant (5L) offers a large, biodegradable supply for extensive water cooling loops. If you are searching for mayhems x1 premixed PC coolant alternatives, you may need different volumes, colors, or material compatibilities. This original product prioritizes environmental safety and corrosion protection in a five-liter container. Its proprietary vegetable-based blend ensures operational longevity while maintaining a vivid Tree Viper Green hue.
You might look elsewhere if you require smaller quantities for testing or specific radiator materials. Some builders prefer premixed fluids from different brands for distinct visual effects or tighter space constraints. The alternatives listed here were chosen because their specifications overlap with the original product. This includes shared attributes like coolant type, color options, and volume sizes. Each option provides a practical solution for varying loop requirements, from compact single-fan setups to large custom builds. You can select the best fit based on your specific hardware dimensions and aesthetic preferences.
Our top pick: Mayhems X1 Premixed Coolant (5L, Tree Viper Green).
Comparing Mayhems X1 Alternatives
Mayhems XT1 Premixed PC Coolant 5 Litre
The Mayhems XT1 matches the X1 with a 5 Litre volume and Tree Viper Green color, but it carries a different model number. Both fluids share the brand’s focus on corrosion protection and long operational life. The XT1 offers the same large capacity for extensive custom loops, making it a direct substitute if you need extra supply. You get identical environmental benefits and biodegradable properties. The main difference lies in the specific formulation details, which may affect viscosity or additive packages. If you already use Mayhems products, this maintains consistency in your loop chemistry. It suits builders who want bulk volume without switching brands.
EK EK-CryoFuel Acid Green Coolant 1000mL
The EK CryoFuel Acid Green differs significantly by offering only 1000ml, which is much smaller than the X1’s 5 Litre. This compact size suits small loops or testing scenarios where large volumes are unnecessary. The color is a distinct Acid Green rather than Tree Viper Green. You gain portability and reduced cost for minor builds, but you lose the bulk supply needed for large custom setups. The premixed formula ensures safe conductivity immediately. If your system is tight or you are experimenting, this smaller bottle is practical. It does not replace the X1 for major installations, but it serves as a precise tool for smaller projects.
PrimoChill Ice 32oz UV Brite Green
The PrimoChill Ice 32oz UV Brite Green provides 32 fluid ounces, which is less than the X1’s 5 Litre but more than the EK option. It features a UV Brite Green color that reacts to ultraviolet light, offering a different aesthetic than the standard Tree Viper Green. This coolant is pre-mixed and ready to use, similar to the X1. It prioritizes visual appeal for glass or acrylic tubing. You get consistent coloring and material compatibility, but less total volume. If you value glowing aesthetics in a mid-sized build, this is a strong choice. It does not match the X1’s environmental focus but excels in visual customization for clear components.
Quick picks
Our 7 picks
Mayhems X1 Premixed Coolant (5L, Tree Viper Green)
Best for: large volume biodegradable coolant needs
- Coolant Type
- Tree Viper Green
- Coolant Volume
- 5 Litre
- Dimensions
- 5.91 × 7.48 × 11.8 inches
- Weight
- 11.2 pounds
View on Amazon: Mayhems X1 Premixed Coolant (5L, Tree Viper Green)
You get 5 litres of Mayhems X1 premixed coolant in Tree Viper Green. This fluid uses a proprietary blend of refined vegetable extracts that are fully biodegradable. It is formulated to protect components from corrosion and scale build up. The package weighs 11.2 pounds and measures 11.8 inches in height. It suits builders who want advanced thermal performance with an environmentally friendly base fluid for their custom loops.
Pros
- 5 Litre capacity for large loops
- Based on refined vegetable extracts
- Fully biodegradable formula
- Protects against corrosion and scale
- Tree Viper Green color
Cons
- Limited to single color option per unit
- No UV reactive properties listed
- Heavy 11.2 pound shipping weight
Good fit if
- You need a large 5 Litre volume
- You prefer biodegradable vegetable-based fluids
- You want pre-mixed corrosion protection
Skip if
- You require UV reactive colors
- You need a smaller sample size
- You prefer clear or black coolant
Verdict: Mayhems X1 Premixed Coolant 5L delivers a large 5 Litre supply of biodegradable fluid. It is a practical choice for builders prioritizing environmental safety and corrosion protection in Tree Viper Green.
Mayhems XT1 Premixed PC Coolant 5 Litre
Best for: Large custom loops needing 5L premixed coolant
- Coolant Type
- Tree Viper Green
- Coolant Volume
- 5 Litre
- Dimensions
- 9.45 × 6.69 × 4.53 inches
This is a premixed PC coolant designed for liquid cooling systems. It comes in a 5 Litre container with a Tree Viper Green color. Mayhems states it offers their longest operational lifetime and protects components from corrosion and scale. The physical dimensions are 9.45 inches in length, 6.69 inches in width, and 4.53 inches in height. You get a large volume suitable for extensive custom loops.
Pros
- 5 Litre volume provides ample supply for large builds
- Premixed formula allows for immediate use without preparation
- Specifically formulated to prevent corrosion and scale buildup
- Tree Viper Green color adds visual appeal to the loop
Cons
- Limited to a single color option in this specific listing
- No data provided regarding electrical conductivity or safety ratings
- No information on included maintenance or top-up compatibility
Good fit if
- You need a large 5 Litre supply for a complex loop
- You want a premixed solution to simplify the build process
- You prefer a green coolant to match your system theme
Skip if
- You require a specific color other than Tree Viper Green
- You are looking for a smaller 1 Litre container
- You need detailed conductivity or safety specification data
Verdict: Mayhems XT1 5L Premixed Coolant is a high-volume option for builders who prioritize longevity and corrosion protection. It suits those assembling large custom loops who want a ready-to-use green coolant without mixing.
EK EK-CryoFuel Acid Green Coolant 1000mL
Best for: small loops or testing
- Coolant Type
- Acid Green
- Coolant Volume
- 1000ml
- Weight
- 2.4 pounds
This EKWB CryoFuel premix coolant comes in a 1000mL bottle. It features an Acid Green color using high-quality pigments for vivid saturation. The formula is thermal efficient and non-toxic. It has low electrical conductivity, which reduces risk in open loops. It is compatible with acrylic, PeTG, POM, and rubber materials. The liquid is eco-friendly and 90% biodegradable in 10 days. It suits users who want a smaller volume for testing or small builds.
Pros
- Low electrical conductivity for safer open-loop use
- High-quality pigments for intense, saturated colors
- Compatible with acrylic, PeTG, POM, and rubber materials
- 90% biodegradable in 10 days
Cons
- Smaller 1000mL volume compared to 5L alternatives
- Higher cost per liter than bulk options
- Limited color selection in this specific listing
Good fit if
- You need a smaller volume for a test loop
- You prioritize low electrical conductivity
- You want vivid color saturation
Skip if
- You need a 5L bulk volume
- You are on a tight budget
- You prefer clear or black coolant
Verdict: EKWB CryoFuel 1L Acid Green Premix offers vivid color and safe conductivity in a compact size. It fits small builds or testing, but lacks the bulk volume of the Mayhems X1.
Alphacool NexXxos 240mm Full Copper Radiator
Best for: 240mm copper radiator builds
- Radiator Size
- 240mm
- Material
- Copper
- Thread Size
- G1/4"
- Fan Mount
- Dual Fan
- Dimensions
- 4.88 × 11 × 1.81 inches
- Weight
- 1.32 pounds
View on Amazon: Alphacool NexXxos 240mm Full Copper Radiator
This 240mm radiator features full copper chambers and fins with brass G1/4" threads. It has steel side panels and weighs 1.199kg. The dimensions are 280 x 124 x 46mm. It suits builders using Mayhems X1 coolant who need a 240mm loop. The black finish matches many cases. You get six connection ports for flexible tubing routing.
Pros
- Full copper chambers and fins for heat transfer
- Six G1/4" ports for flexible plumbing
- Brass threaded ports for durability
- Compact 124mm height fits many cases
Cons
- Steel side panels may corrode with some coolants
- Heavy at 1.199kg for single mounting
- Black finish limits aesthetic matching
Good fit if
- You need a 240mm radiator size
- You prefer full copper construction
- You want multiple port options
Skip if
- You require a 360mm or larger radiator
- You need aluminum construction
- You want a silver or white finish
Verdict: Alphacool NexXxos XT45 240mm Copper Radiator provides reliable cooling for 240mm setups with its copper core. It fits users who prioritize copper construction and port flexibility over weight savings.
Alphacool NexXxos UT60 120mm Copper Radiator
Best for: small cases needing single-fan cooling
- Radiator Size
- 120mm
- Material
- Copper, brass, steel
- Thread Size
- G1/4"
- Fan Mount
- Single Fan
- Dimensions
- 4.72 × 4.72 × 2.76 inches
- Weight
- 1.76 pounds
View on Amazon: Alphacool NexXxos UT60 120mm Copper Radiator
This single-fan radiator measures 157 by 124 by 60 mm. It uses copper chambers and fins with steel side panels. You get six G1/4 inch ports for flexible tubing routing. The unit weighs 1,004 grams. It fits standard 120 mm fan mounts. This compact design suits builds where space is tight. You can pair it with premixed coolants for a clean look.
Pros
- Copper chambers and fins for efficient heat transfer
- Six G1/4 inch ports for versatile tubing connections
- Compact 120 mm size fits small cases
- Steel side panels add structural durability
Cons
- Single fan limits total cooling surface area
- Steel sides may reduce airflow compared to all-copper designs
- Limited to 120 mm fan size
Good fit if
- You need a compact radiator for a small form factor case
- You want multiple port options for custom tubing layouts
- You prefer copper components for heat dissipation
Skip if
- You require high airflow from dual or triple fans
- You need a radiator larger than 120 mm
- You prefer an all-copper construction without steel sides
Verdict: Alphacool NexXxos UT60 120mm Copper Radiator offers efficient cooling in a small footprint. It suits builders who need flexible port placement in tight spaces.
PrimoChill Ice 32oz UV Brite Green
Best for: pre-colored coolant for glass or acrylic builds
- Coolant Type
- Transparent UV Brite Green
- Coolant Volume
- 32oz
- Dimensions
- 8.68 × 8.68 × 8.68 inches
- Weight
- 2.4 pounds
This PrimoChill Ice coolant comes in a 32 fluid ounce bottle. It is pre-measured and pre-colored for UV Brite Green. You get repeatable chemistry with identical colors every time. The formula is low viscosity and low chemical content. It works with rubber gaskets, acrylic, PVC, PETG, glass tubing, nickel, and copper components. This ready-to-use option suits you if you want consistent coloring without mixing.
Pros
- 32 fluid ounce capacity
- Pre-measured and pre-colored for UV Brite Green
- Compatible with acrylic, PVC, PETG, glass, nickel, and copper
- Repeatable chemistry ensures identical colors every time
Cons
- Smaller 32oz volume compared to the 5L alternatives
- Single color option (UV Brite Green) rather than a multi-pack
- No mention of included mixing tools or detailed viscosity ratings
Good fit if
- You want a pre-colored coolant ready to add to your system
- You need compatibility with glass or acrylic tubing
- You prefer a smaller 32oz bottle for top-ups
Skip if
- You need a large 5L bulk supply
- You prefer a color other than UV Brite Green
- You want to mix your own custom color blends
Verdict: PrimoChill Ice 32oz UV Brite Green Coolant is a convenient, pre-mixed option for builders using glass or acrylic tubing. It fits you well if you prioritize consistent coloring and material compatibility over bulk volume.
Alphacool NexXxoS ST30 280mm Copper Radiator
Best for: Compact 280mm full copper cooling loops
- Radiator Size
- 280mm
- Material
- Copper
- Thread Size
- G1/4
- Dimensions
- 12.6 × 5.67 × 1.18 inches
- Weight
- 0.86 kilograms
View on Amazon: Alphacool NexXxoS ST30 280mm Copper Radiator
This is a 280mm full copper radiator designed for high-performance liquid cooling loops. It measures 12.6 inches in length and 1.18 inches in height, weighing 0.86 kilograms. The black finish suits standard builds. You should choose this if you need a compact heat exchanger that fits in tight spaces while maintaining efficient thermal transfer through its all-copper construction.
Pros
- Full copper construction for reliable heat dissipation
- 280mm size balances surface area and case compatibility
- Slim 1.18-inch profile fits in constrained chassis
- Black finish matches most aesthetic themes
Cons
- Limited to 280mm size, not suitable for larger 360mm or 480mm setups
- No included fans, requiring separate purchase
- Basic black finish lacks premium aesthetic options
Good fit if
- You have a case with a 280mm mounting option
- You prefer full copper radiators for durability
- You are building a compact high-performance loop
Skip if
- You need a 360mm or larger radiator
- You want a radiator with integrated fans
- You require a thicker 1.97-inch or 1.57-inch profile
Verdict: Alphacool NexXxoS ST30 280mm Copper Radiator is a solid choice for builders needing a slim, high-quality copper heat exchanger that fits standard 280mm mounts. It delivers reliable cooling without the bulk of thicker designs.
Specifications side by side
| Spec | Mayhems X1 Premixed Coolant (5L, Tree Viper Green) | Mayhems XT1 Premixed PC Coolant 5 Litre | EK EK-CryoFuel Acid Green Coolant 1000mL | Alphacool NexXxos 240mm Full Copper Radiator | Alphacool NexXxos UT60 120mm Copper Radiator | PrimoChill Ice 32oz UV Brite Green | Alphacool NexXxoS ST30 280mm Copper Radiator |
|---|---|---|---|---|---|---|---|
| Radiator Size | not specified | not specified | not specified | 240mm | 120mm | not specified | 280mm |
| Coolant Type | Tree Viper Green | Tree Viper Green | Acid Green | not specified | not specified | Transparent UV Brite Green | not specified |
| Material | not specified | not specified | not specified | Copper | Copper, brass, steel | not specified | Copper |
| Thread Size | not specified | not specified | not specified | G1/4" | G1/4" | not specified | G1/4 |
| Coolant Color | Green | Green | Green | not specified | not specified | Green | not specified |
| Coolant Volume | 5 Litre | 5 Litre | 1000ml | not specified | not specified | 32oz | not specified |
| Fan Mount | not specified | not specified | not specified | Dual Fan | Single Fan | not specified | not specified |
| Size | 5 Litre | 5 Litre | not specified | 240Mm | 120Mm | 32 fluid ounces | 280mm |
| Dimensions | 5.91 × 7.48 × 11.8 inches | 9.45 × 6.69 × 4.53 inches | not specified | 4.88 × 11 × 1.81 inches | 4.72 × 4.72 × 2.76 inches | 8.68 × 8.68 × 8.68 inches | 12.6 × 5.67 × 1.18 inches |
| Weight | 11.2 pounds | not specified | 2.4 pounds | 1.32 pounds | 1.76 pounds | 2.4 pounds | 0.86 kilograms |
| Color | Tree Viper Green | Tree Viper Green | Acid Green | black | not specified | UV Brite Green | black |
| Model | MX1P5LGR | MXTP5LGR | 3831109813294 | 14164 | 14172 | PC-ICE2-BG | 14197 |
Frequently asked questions
What is the best premixed coolant alternative for large custom loops?
The Mayhems XT1 Premixed PC Coolant is the top alternative for large systems. It provides a 5 Litre volume of Tree Viper Green fluid. This size suits builders who need a ready-to-use solution without mixing. It prioritizes longevity and corrosion protection for extensive water cooling setups.
Which green coolant is best for small builds or testing?
The EK CryoFuel Acid Green Coolant is ideal for small loops or initial testing. It comes in a compact 1000ml size. This fluid offers vivid color and safe conductivity. It fits well if you need a smaller volume than the standard 5 Litre options available for larger builds.
Is there a 32oz premixed coolant option available?
Yes, the PrimoChill Ice 32oz UV Brite Green Coolant is a suitable choice. It offers a convenient 32 fluid ounce volume. This pre-mixed option is designed for builders using glass or acrylic tubing. It provides consistent coloring and material compatibility for aesthetic-focused custom loops.
What are the key differences between Mayhems X1 and XT1 coolants?
Both coolants offer a 5 Litre volume and Tree Viper Green color. The primary difference is the model number, with the X1 being biodegradable. The XT1 focuses on longevity and corrosion protection. Both are premixed, making them practical for builders who want to avoid mixing chemicals manually.
Can I use these coolants with copper radiators?
Yes, these premixed fluids are generally compatible with copper components. The Mayhems brand emphasizes corrosion protection, which supports copper usage. When pairing with copper radiators like the Alphacool NexXxos series, ensure the fluid maintains safe conductivity to prevent electrical issues in your loop.
How does the volume of EK CryoFuel compare to Mayhems X1?
The EK CryoFuel comes in a 1000ml bottle, which is significantly smaller than the 5 Litre Mayhems X1. This makes the EK option better for small loops or testing phases. The Mayhems X1 provides a large supply suitable for extensive builds requiring more fluid volume.
What color options are available for 5L premixed coolants?
The Mayhems X1 and XT1 both come in Tree Viper Green. This color is consistent across the 5 Litre offerings from this brand. If you require different colors or sizes, alternatives like the PrimoChill Ice offer UV Brite Green in smaller 32oz volumes for varied aesthetic needs.
Are there biodegradable coolant alternatives to Mayhems X1?
The Mayhems X1 itself is biodegradable, making it a practical choice for environmental safety. While specific biodegradable claims for other brands are not detailed in the provided data, the XT1 offers similar corrosion protection. You should check manufacturer specifications for other brands to confirm biodegradability status.