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Nissan Marine Oil/Gas Mixture Chart

For outboards that require a 50:1 premix of oil/gas we've put together the following chart to simplify the calculations.

Only use 2-cycle outboard motor oil with a NMMA (National Marine Manufacturer's Assoc.) certified rating of TCW3. Never use automobile motor oil! TCWII oil may be used if TCW3 oil is not available.

Unleaded gasoline with a minimum octane rating of 87 is necessary, however, we recommend using an octane rating of 89 if possible for best performance.

The gas and oil mixture is 50:1 (25:1 during the initial break-in period).

Since trying to mix 1.28 ounces of oil for a half gallon of gas is a little difficult to measure, many people find it easier to purchase a 6 gallon fuel tank and mix 1 pint of oil (16 ounces) with the gasoline. Then use the 6 gallon tank to fill up your individual tank that you will be using on your boat.

50:1 GAS/OIL MIXTURE

Gas
(US Gallons)
Oil
(Ounces)
Oil
(Pints)
Gas
(Liters)
Oil
(Liters)
0.25 0.64 0.04 0.95 0.02
0.37 0.95 0.06 1.40 0.03
0.5 1.28 0.08 1.90 0.04
0.66 1.69 0.11 2.50 0.05
0.75 1.92 0.12 2.84 0.06
1.0 2.56 0.16 3.79 0.08
1.5 3.84 0.24 5.68 0.11
2.0 5.12 0.32 7.58 0.15
3.0 7.68 0.48 11.37 0.23
3.43 8.78 0.55 13.00 0.26
4.0 10.24 0.64 15.16 0.30
5.0 12.80 0.80 18.94 0.38
6.0 15.36 0.96 22.73 0.46
10.0 25.60 1.60 37.89 0.76
15.0 38.40 2.40 56.83 1.14
20.0 51.20 3.20 75.78 1.52

During your initial break-in period you should use a 25:1 (double oil) mixture. See your owner's manual for complete details or view our Break-In Chart on-line.

25:1 GAS/OIL MIXTURE

Gas
(US Gallons)
Oil
(Ounces)
Oil
(Pints)
Gas
(Liters)
Oil
(Liters)
0.25 1.28 0.08 0.95 0.04
0.37 1.89 0.12 1.40 0.06
0.5 2.56 0.16 1.89 0.08
0.66 3.38 0.21 2.50 0.10
0.75 3.84 0.24 2.84 0.11
1.0 5.12 0.32 3.79 0.15
1.5 7.68 0.48 5.68 0.23
2.0 10.24 0.64 7.58 0.30
3.0 15.36 0.96 11.37 0.46
3.43 17.56 1.10 13.00 0.52
4.0 20.48 1.28 15.16 0.61
5.0 25.60 1.60 18.94 0.76
6.0 30.72 1.92 22.73 0.91
10.0 51.20 3.20 37.89 1.52
15.0 76.80 4.80 56.83 2.27
20.0 102.40 6.40 75.78 3.03

Conversion Information

128 ounces = 1 gallon 1 ounce = 0.0296 liters
16 ounces = 1 pint 1 gallon = 3.789 liters
2 pints = 1 quart
4 quarts = 1 gallon

Example of calculation:
GALLONS X 128 (ounces) / RATIO = OUNCES OF OIL TO MIX WITH GAS

6 gal. X 128 (oz.) / 50 (50:1 ratio) = 15.36 oz. of oil for 6 gal. of gas

6 gal. X 8 (pints) / 50 (50:1 ratio) = 0.96 pints of oil for 6 gallons of gas

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