In common with most British-built two-stroke machines of the time, the petroil mixture ratio recommended is a little cautious erring on the 'oily' side at 16:1 using self-mixing two-stroke oil (16 parts of petrol to 1 part oil). The manual advises stretching it to 20:1 if using SAE20 motor engine oil. This British tendency to add rather more oil than the Continentals gave two-strokes a 'blue smokey exhaust' reputation in the UK but the Panda exhaust is not particularly smokey.
Like most two-stroke machines of its time, the recommended petrol-to-oil ratio for this machine is 16:1 using self-mixing oil (16 parts petrol to 1 part oil). The manual advises diluting it to 20:1 if using SAE20 motor engine oil. This British tendency to add more oil than Continental counterparts resulted in a 'blue smokey exhaust' reputation, but the Panda's exhaust is not notably smoky.