Oil and Gas Mixture Ratios

For 2-Stroke outboards that require a 50:1 premix of oil/gas 

We've put together the following chart to simplify the calculations.

Use ONLY 2-stroke outboard motor oil with an NMMA (National Marine Manufacturer's Assoc.)
certified rating of TCW3.
Never use automobile motor oil in your 2-stroke outboard!
TLDI outboards should only be run using TCW3 oil specifically formulated for use in Direct Injection motors.
Standard TCW3 oil is not recommended for use in TLDI outboards.
The following oils have been tested by our factory and certified for use in TLDI motors:
Tohatsu Marine Premium Oil
Nissan Marine Premium Oil
Pennzoil Complete Marine Synthetic
Pennzoil Semi-Synthetic Outboard Oil
Mercury Optimax/DFI Oil
Yamaha Yamalube 2-M Semi-Synthetic Injector Oil
Bombardier RAM Ficht Oil
The above oil brands are currently the only brands that have been tested and approved by our factory for use in TLDI systems. Brand names listed are trademarked by their respective owners.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.

50:1 GAS/OIL MIXTURE
Gas
(US Gallons)
Oil
(Ounces)
Oil
(Pints)
Gas
(Liters)
Oil
(Liters)

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

1.0

2.56

0.16

3.79

0.08

2.0

5.12

0.32

7.58

0.15

3.0

7.68

0.48

11.37

0.23

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

25:1 GAS/OIL MIXTURE
Gas
(US Gallons)
Oil
(Ounces)
Oil
(Pints)
Gas
(Liters)
Oil
(Liters)

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

1.0

5.12

0.32

3.79

0.15

2.0

10.24

0.64

7.58

0.30

3.0

15.36

0.96

11.37

0.46

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


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 ourBreak-In Chart on-line.

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

 

Calculation:

# Gallons x 128 (ozs)/Ratio = Ounces of Oil to mix with Gas

Examples:

6 (galls) x 128 (ozs)/50 (50:1 ratio) = 15.36 ozs of oil for 6 galls of gas
6 (galls) x 8 (pints)/50 (50:1 ratio) = 0.96 pints of oil for 6 galls of gas
 

 

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