Chrysler 6, 7.5, 180 Sailor Outboard Motors Service Manual, OB 3330, Page 12Get this manual
_ GENERAL SERVICE INFORMATION MOTOR IDENTIFICATION
Figure illustrates the motor serial number and model number which are located on the identification plate attached to the port stern bracketAlways indicate these numbers in all correspondence to properly identify the motor and to ensure that the correct parts are obtained when ordered Fuel SelectionAutomotive gasoline lead free, regular leaded or premium leaded having minimum octane number of 85 may be used See Table 1
AWARNING
Gasoline is extremely flamable and highly explosive under certain conditionsDo not fill fuel tank while motor is running Do not smoke or allow open flames or sparks near boat when refuelingMix fuel in well ventilated area Outboard OilUse Chrysler Outboard Oil which is BIA certified TC-W OilWhen Chrysler Outboard Oil is not available, the following may be used: Next choice Any other BIA Certified TC-W
For emergencyHigh quality SAE-40 Heavy Duty outboard oilFuel- Outboard Oil MixWhen buying pre-mixed fuel make sure 50 to ratio is usedTo mix fuel with outboard oil proceed as follows :