Hi From Australia. I have my fathers Canadien 270 which is in very good condition, he bought it new in the late 60's. I have the saw running, its blowing alot of blue smoke, no doubt the current fuel mix if different from the original 16:1 ratio. Can anyone suggest what fuel mix I should use with modern oils (syntheic ??) and petrol. Also, any hint on correctly adjusting carby for a tune up would also be appreciated. I will post some picture when I have time. Cheers Left.