
Gasoline Additives
P.i. Performance Improver Gasoline Additive
• Restores up to 14% horsepower1
• Reduces need for costly higher-octane fuel
• Reduces noise from carbon rap and pre-ignition
• Controls pre-ignition "knock"
1Based on third-party testing in a 2016 Chevrolet* Silverado* 1500, 5.3L V-8 GDI with 100,616 miles, using one tank treated with AMSOIL P.i. Actual results may vary.

• Restores up to 14% horsepower1
• Reduces need for costly higher-octane fuel
• Reduces noise from carbon rap and pre-ignition
• Controls pre-ignition "knock"
1Based on third-party testing in a 2016 Chevrolet* Silverado* 1500, 5.3L V-8 GDI with 100,616 miles, using one tank treated with AMSOIL P.i. Actual results may vary.
$13.85
Retail Price (USD)
Preferred Price:
$10.65
Save:
$3.20
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Upper Cylinder Lubricant
Preserves Horsepower and Performance

$4.95
Retail Price (USD)
Preferred Price:
$3.65
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$1.30
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Quickshot®
Formulated to Restore Peak Performance in Small Engines and Powersports Equipment

$10.35
Retail Price (USD)
Preferred Price:
$7.85
Save:
$2.50
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Gasoline Stabilizer

$13.15
Retail Price (USD)
Preferred Price:
$10.00
Save:
$3.15
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DOMINATOR® Octane Boost
Improves Performance in all Two- and Four-Stroke Gasoline-Fueled Engines

$10.95
Retail Price (USD)
Preferred Price:
$8.55
Save:
$2.40
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Motorcycle Octane Boost
Maximizes Power and Efficiency

$5.45
Retail Price (USD)
Preferred Price:
$4.25
Save:
$1.20
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