Husky junk

[Oldfeller]

6 hours ago, openspaceman said:

We always saw "varnishing" of the insides of carburetors that had been left with fuel on, as the petrol evaporated but it seems to have become worse.

some of the older saws I have were ran on mixtures of 25;1, and some even 16;1 when stripping them I often find pure oil in the carbs,the petrol being long evaporated, back then they would often use just plain engine oil, they all lasted decades on the stuff, they say the latest 2t oils don't need so much 50;1 being common.

I do run the oldies on modern 2t oils but usually around 30-40 ;1

no issues so far.

 

[pleasant]

12 hours ago, Oldfeller said:

some of the older saws I have were ran on mixtures of 25;1, and some even 16;1 when stripping them I often find pure oil in the carbs,the petrol being long evaporated, back then they would often use just plain engine oil, they all lasted decades on the stuff, they say the latest 2t oils don't need so much 50;1 being common.

I do run the oldies on modern 2t oils but usually around 30-40 ;1

no issues so far.

 

I have a pretty rare Pioneer 11-60 (only in production for about a year or two) and on the fuel cap on that it states SAE30 oil for the fuel mix......which is predominantly an oil used in air cooled 4-stroke engines.

Edited 2 hours ago by pleasant

[Muddy42]

There is a theory that 50:1 was implemented for environmental reasons in the US.  Anecdotally most serious users I come across seam to favour a richer mix. Its very hard to test, the debate continues!

 

 

[pleasant]

1 hour ago, Muddy42 said:

There is a theory that 50:1 was implemented for environmental reasons in the US.  Anecdotally most serious users I come across seam to favour a richer mix. Its very hard to test, the debate continues!

 

 

I'm not so sure about that theory, but you may well be correct, but my gut feeling is states like California (notoriously strict on emissions) insisted on machines being run on a more modern 50:1 mix oil, rather than it being developed specifically for California, or the US in general. I have been around oils all my working life....21 years in the motor trade, and now nearly 26 in the garden machinery sector, and like most things they develop with new technology thats available....well, a combination of costs and technology for most companies, so if you can develop a more man made laboratory oil, that will give better protection than something you have to drill out the ground, thus giving you more profit and a better product to the consumer, then it's a win win.