Just thought I would share my observations.
1.Do they work - yes they do but its relative
2.Are all catch cans the same - absolutely not, you must fit a baffled type otherwise you are wasting your money
3.One size fits all - well not quite , 19mm pipework is the best , anything smaller and you increase pressure which could lead to failures of the system you are using.
4. Bigger the better - Well in some respects yes , I have a little 300cc unit and it gets approx half full every 10 days or so, much quicker if pushing hard.
From my own use I find that I get more water than oil gunge - this is gunge/condensation but would get mixed and weaken the fuel if being sent back into the inlet.
Older engines with more mile's and also those less looked after suffer increased blow by and any benefit would probably be lost as the engine will be down on power anyway.
1.Do they work - yes they do but its relative
2.Are all catch cans the same - absolutely not, you must fit a baffled type otherwise you are wasting your money
3.One size fits all - well not quite , 19mm pipework is the best , anything smaller and you increase pressure which could lead to failures of the system you are using.
4. Bigger the better - Well in some respects yes , I have a little 300cc unit and it gets approx half full every 10 days or so, much quicker if pushing hard.
From my own use I find that I get more water than oil gunge - this is gunge/condensation but would get mixed and weaken the fuel if being sent back into the inlet.
Older engines with more mile's and also those less looked after suffer increased blow by and any benefit would probably be lost as the engine will be down on power anyway.