The 100:1 ratio uses modern synthetic 2-stroke oil for a lean, clean-burning mix. Specified by some newer engines and premium synthetic oils. Mix 1.28 fl oz per gallon.
Quick Reference
Gallons
Liters
Fuel (Gallons)
Oil (fl oz)
1 gallon
1.28 fl oz
2 gallons
2.56 fl oz
2.5 gallons
3.2 fl oz
3 gallons
3.84 fl oz
5 gallons
6.4 fl oz
10 gallons
12.8 fl oz
Also see
50:1
40:1
32:1
25:1
24:1
20:1
16:1
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Facts About 100:1
⛽
PER GALLON
1.28 fl oz
🧪
PER LITER
10 mL
📐
OIL PERCENTAGE
1.0%
Equipment Rated for 100:1
This equipment uses a 100:1 mix ratio. Always check your owner's manual to confirm.
Amsoil Saber
Klotz
RedMax synthetic
Modern synthetic blends
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⚠️
Ethanol Hazard
Use E0 when available, or E10 if your manual allows it. Higher-ethanol blends absorb water faster, age poorly, and can damage small-engine fuel systems.
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Use the calculator to get exact fuel and oil amounts.