Archoil AR9100 Oil Additive 16 oz — Reduces Injector Stiction, Cuts Friction for Gas & Diesel

Archoil AR9100 is a concentrated oil additive that reduces injector stiction, cuts internal friction, and strengthens lubrication for gasoline and diesel engines.

If you want to quiet noisy components, improve throttle response, and protect internal parts without changing your oil chemistry, AR9100 is designed to blend with conventional and synthetic lubricants. One 16 oz bottle treats typical passenger-car or light-truck oil capacities, and its formula is widely used in Power Stroke HEUI systems to address injector sticking. Beyond diesel applications, it also works in gear, hydraulic, and power steering systems at specific treat rates.

How does AR9100 address cold-start injector problems?

AR9100 contains friction-reducing additives that smooth the movement of injectors and other rubbing components during cold starts. By lowering surface adhesion and improving initial lubrication, it reduces misfires and rough idling common in HEUI and similar injection systems.

• Specifically reduces injector stiction in HEUI-equipped Power Stroke engines.
• Treat rate for engine oil: 1.2 oz per quart for full protection.
• Effective immediately after being mixed into the oil—no special procedures required.

Will this work in both diesel and gasoline engines?

Yes—AR9100 is formulated to be compatible with a wide range of engine oils and equipment fluids. It improves anti-wear and lubrication properties in both fuel types while remaining suitable for gearboxes, hydraulic systems, and power steering at adjusted dosages.

• Universal compatibility with conventional and synthetic motor oils.
• Alternative treat rate for gears and hydraulics: 3.2 oz per quart.
• Safe to use across passenger vehicles, light trucks, motorcycles, and equipment.

How does AR9100 improve performance and component life?

The additive forms a durable lubricating layer on metal surfaces that reduces metal-to-metal contact and heat generation. That leads to smoother throttle response, quieter operation, and lower rates of wear on critical parts like injectors, bearings, and valvetrain components.

• Reduces friction to improve drivability and throttle feel.
• Quiets noise and vibration under load by improving film strength.
• Helps slow oil degradation and reduce deposit formation.

How do you dose AR9100 and what does one bottle treat?

Dosing depends on the fluid type: use 1.2 ounces per quart for engine oils and 3.2 ounces per quart for gear and hydraulic fluids. A 16 oz bottle covers most single oil changes for typical engines, including one 6.0L or 7.3L Power Stroke (13–16 quarts) when used at the recommended rate.

• Engine oil: 1.2 oz per quart.
• Gear/hydraulic/power steering: 3.2 oz per quart.
• One 16 oz bottle treats a standard 13–16 quart engine oil fill at required concentration.

Who is this for? Owners and technicians seeking a practical way to reduce injector sticking, lower friction, and extend component life will benefit from AR9100. It’s particularly useful for operators of older HEUI-equipped Power Stroke diesels experiencing cold-start misfires, and for anyone wanting added anti-wear protection across a fleet of gasoline and diesel vehicles, motorcycles, or hydraulic equipment. AR9100 is a supplement to proper maintenance—not a substitute for routine oil changes or mechanical repairs—so use it as part of a regular service plan to help preserve performance and reliability.