Thanks for your input Dixie .... any idea how often the oil needs topping up under normal conditions ... I'd also be interested in why the oil would end up in the air box if anyone has any more information it would be appreciated.
Just to be clear -
I top the oil up at the start of the day (the way I check this is to start the bike and allow to run for 3 mins, then let it cool down for three mins. I then insert the dipstick without screwing it in ... the oil now measures on the max indicator. Four or five hours of riding and using the same as above measure the oil again, it now measures between the max and min indicators (not screwing the dipstick in .. is this correct ?, it is the method outlined in the 4RT manual)
Thanks all .... please add a reply if you have any thoughts