Klotz BeNOL Pre-Mix Castor Oil for 2-Stroke Racing Engines - Low Smoke

In this review the Klotz BeNOL Pre-Mix Castor Oil is evaluated for riders and mechanics who run high-output two-stroke racing engines and demand reliable protection under extreme conditions. The bottom line: BeNOL stands out because it combines a biodegradable castor base with a fortified anti-wear chemistry that delivers a tenacious lubricating film and a low-smoke burn, making it a strong choice for off-road bikes, karts, and personal watercraft where engine protection and throttle response matter most.

Key Features

• Highly refined castor base: Provides a durable lubricating film that protects pistons and bearings from metal-to-metal contact even at high RPMs and temperatures.
• Double film strength: Formulated to offer roughly twice the load-carrying capacity of conventional castor oils for improved scuff and wear resistance.
• Extra fortified and de-gummed: Anti-wear chemistry reduces scuffing and helps preserve piston rings and bearing surfaces under racing loads.
• Clean burn technology: Low-smoke combustion reduces visible exhaust and helps mitigate carbon deposits for smoother performance and better throttle response.
• Broad fuel compatibility: Blends with methanol, ethanol, nitromethane, and gasoline, making it usable across many premix race applications.
• Biodegradable base stock: Castor oil provides environmental advantages compared with some synthetic blends while still meeting racing demands.

Who It's For

BeNOL is aimed at racers and enthusiasts running high-output two-stroke engines in off-road motorcycles, ATVs, karts, personal watercraft, and micro sprints who premix their fuel and need strong film strength and anti-wear protection. It is especially useful where low-smoke burn and reduced carbon buildup help maintain throttle response during race conditions.

Riders who use oil-injection systems should look elsewhere because this product is intended for premix use only. Also, those who require a fully synthetic or mineral oil tailored for long-term street use rather than racing may prefer other lubricants designed for those specific applications.

Pros & Cons

Pros

• Excellent engine protection thanks to a strengthened castor film that resists scuffing and wear.
• Low-smoke burn and cleaner combustion that reduces carbon deposits and improves throttle response.
• Compatible with methanol, ethanol, nitromethane, and gasoline for flexible premix setups across many race classes.

Cons

• Not suitable for oil-injection systems, so it requires manual premixing at manufacturer or recommended ratios.
• Some customers reported occasional bottle leakage during transport, so careful handling is advised.

Specifications

Product	Klotz BeNOL premix castor oil
Volume	1 gallon
Intended engines	2-stroke racing motorcycle, ATV/UTV, PWC, kart, micro sprint
Compatibility	Methanol, ethanol, nitromethane, gasoline
Use type	Pre-mix only (not for oil-injection)
Mix recommendations	Air-cooled 201:321; Water-cooled 321:501; Kart 161:201; 2-stroke glow 15-18%; 4-stroke glow 5-10%
Base	Highly refined castor oil, biodegradable

Our Verdict

Klotz BeNOL is a focused race-oriented castor oil that delivers robust film strength, low-smoke combustion, and excellent anti-wear protection for premix two-stroke engines. It is good value for racers who premix fuel and need reliable protection under extreme RPM and temperature; those requiring oil injection or a different oil base should consider alternatives.

Frequently Asked Questions

Can I use BeNOL with ethanol or methanol fuels?
Yes. BeNOL is formulated to blend with methanol, ethanol, nitromethane, and gasoline for premix use.

Is this oil suitable for oil-injection systems?
No. This product is intended for premix only and should not be used in oil-injection setups.

What mix ratios should I use?
Follow manufacturer guidance or the product suggestions: air-cooled 201 to 321, water-cooled 321 to 501, racing kart 161 to 201, 2-stroke glow 15-18%, 4-stroke glow 5-10%.