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UK 2 Stroke Oil Calculator
Calculate 2-stroke oil mix using litres and millilitres - the standard metric units in the United Kingdom.
🇬🇧
UK Metric Calculator
📍 This calculator uses Litres and Millilitres - standard in the UK
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Mix Result
UK 2-Stroke Mix Ratios (Metric)
| Fuel | Ratio | Oil Required |
|---|---|---|
| 5 L | 25:1 | 200 ml |
| 5 L | 32:1 | 156 ml |
| 5 L | 40:1 | 125 ml |
| 5 L | 50:1 | 100 ml |
| 10 L | 25:1 | 400 ml |
| 10 L | 32:1 | 312 ml |
| 10 L | 40:1 | 250 ml |
| 10 L | 50:1 | 200 ml |
| 20 L | 25:1 | 800 ml |
| 20 L | 32:1 | 625 ml |
| 20 L | 40:1 | 500 ml |
| 20 L | 50:1 | 400 ml |
Frequently Asked Questions
How long does 2 stroke fuel last?
Ideally use 2-stroke fuel within 30 days. In a sealed container it may be okay for up to about 2–3 months (longer with stabilizer), but if it smells bad or looks off, mix a fresh batch.
50 to 1 ratio in litres?
At 50:1 you add 20 ml of 2-stroke oil per 1 liter of fuel. Examples: 2 L = 40 ml, 5 L = 100 ml.
How many ounces of 2 stroke oil for 5 gallons?
For 5 gallons: at 50:1 use 12.8 fl oz, at 40:1 use 16 fl oz, at 32:1 use 20 fl oz of oil.
How much 2 stroke oil per gallon?
For 1 US gallon: 50:1 = 2.6 fl oz, 40:1 = 3.2 fl oz, 32:1 = 4.0 fl oz, 25:1 = 5.1 fl oz.
How many ounces of oil for 50 to 1 mix ratio?
At 50:1 use about 2.6 fl oz per gallon (5.1 fl oz for 2 gal, 6.4 fl oz for 2.5 gal, 12.8 fl oz for 5 gal).