Red Line 4-Cycle Alcohol Fuel Lubricant - 12oz. (Case of 12)

Professional-Grade Alcohol Fuel Protection for Four-Stroke Racing Engines

Red Line 41102 is a high-performance synthetic fuel lubricant engineered specifically for four-stroke engines running methanol, nitromethane, E85, or any alcohol-based fuel blend. Alcohol fuels strip lubrication from cylinder walls, valve guides, and fuel system components. This formulation replaces that lost protection using a polyol ester synthetic base combined with anti-scuff additives, reducing ring wear, piston scuffing, and cylinder leakdown while measurably increasing power output. This listing is for a case of 12 bottles, each 12 oz., ideal for teams and shops that keep alcohol fuel engines running at peak performance.

How It Works

Alcohol and methanol-based fuels are inherently dry. They wash lubrication off critical metal surfaces, leading to accelerated wear in rings, valve guides, fuel pumps, and injectors. This additive deposits a synthetic lubricant film on steel and aluminum surfaces that alcohol cannot displace. The result is tighter ring seal for more power, reduced friction across the fuel system, and dramatically lower metal-on-metal wear rates compared to running pure methanol. Dyno testing confirmed a 1.5 percent increase in torque when used at a 1-bottle-to-20-gallon ratio in race gas, with similar or greater improvements expected with pure alcohol fuels.

Key Features

• Prevents gelling and corrosion in methanol and nitromethane fuel systems
• Lubricates upper cylinder, valve guides, rings, and fuel system components
• Replaces lubrication lost by wash of dry alcohol fuels
• Reduces ring and cylinder wear and decreases cylinder leakdown
• Lubricates injectors and fuel pumps for extended service life
• Not detectable by standard fuel tests
• Mixes with only slight agitation
• Compatible with E85, methanol, and nitromethane-containing fuels
• Do not use with catalytic converters
• Polyol ester synthetic base for extreme-heat stability

What's Included

• 12 x Red Line 4-Cycle Alcohol Fuel Lubricant, 12 oz. bottles

Specs

Frequently Asked Questions

What engines is this product designed for?
This lubricant is formulated for four-stroke racing engines running alcohol-based fuels including methanol, nitromethane, E85, and alcohol/nitro blends. It is intended strictly for off-road and racing applications and is not for use in street vehicles equipped with catalytic converters.

How much do I add per gallon of fuel?
Use 1 oz per 5 gallons of fuel. A single 12 oz bottle treats up to 55 gallons. For racing applications, 1 bottle to 20 gallons of race gas produced a measured 1.5 percent torque increase on the dyno. Greater improvements are typically seen when running pure alcohol fuels.

Will this additive show up on fuel tests at the track?
No. The formulation is not detectable by standard fuel tests used at racing events and mixes into fuel with only slight agitation. It was specifically developed to meet the needs of competitive racers.

Can I use this with E85?
Yes. This product is fully compatible with E85, methanol, nitromethane, and other alcohol-containing fuel blends. It is not compatible with catalytic converters and should not be used in street vehicles equipped with them.

Why do alcohol fuels cause more engine wear than gasoline?
Alcohol and methanol are dry fuels. They actively wash lubrication off cylinder walls, valve guides, rings, and fuel system components. Without a supplemental lubricant, engines running alcohol fuels experience significantly higher ring and cylinder wear, increased leakdown, and shorter fuel pump and injector service life.

Does this product prevent corrosion in methanol fuel systems?
Yes. Methanol is highly corrosive to steel, aluminum, and zinc-plated components. This formulation contains synthetic lubricants with anti-corrosion properties that significantly reduce the corrosiveness of methanol on common fuel system materials, protecting tanks, lines, carburetors, injectors, and pumps.

How does this product increase engine power?
By restoring lubrication to piston rings, the additive improves ring seal, which directly increases cylinder pressure and power output. It also reduces friction across the fuel pump, injectors, and upper cylinder, recovering power losses caused by friction in fuel systems running dry alcohol fuels.

Can this be used in nitromethane fuel blends?
Yes. This product is suitable for use in engines running nitromethane and nitro/alcohol blends in addition to pure methanol and E85. It provides the same upper cylinder lubrication, ring seal improvement, and corrosion protection in nitro applications as it does in straight methanol applications.

Is this product legal for sanctioned racing?
The formulation is not detectable by standard fuel tests, and dyno data supports its performance claims. Always verify with your specific sanctioning body before competition use, as rules vary by series and class.

Why buy a case of 12 instead of a single bottle?
Race teams and shops that regularly run alcohol fuel engines benefit significantly from the case quantity. At a treat rate of 1 oz per 5 gallons, a full case covers a substantial volume of fuel through a season or multiple events, and the per-bottle cost is lower than purchasing single units.

Installation Instructions

Add Red Line 41102 directly to your fuel at a rate of 1 oz per 5 gallons before mixing or filling. One 12 oz bottle treats up to 55 gallons. Only slight agitation is needed to fully incorporate the additive into the fuel. Do not use in vehicles equipped with catalytic converters or oxygen sensors.

WARNING: This product can expose you to chemicals including Diethanolamine, which is known to the State of California to cause cancer. For more information, go to www.p65warnings.ca.gov.