Hi people I have a slightly different question and have already searched but found nothing …. Since my question is something special !! So I have a CBF 35 Bigfoot 250ccm 4 measure it is air cooled …. I have a heathen respect for a piston eater! Now my question I can not give a little oil much about a closure cap with in the tank ? Or can I use it to harm my engine rather ? It is purely theoretically about the fact that no lubrication takes place or? And yes ic h am clear that a 4 bar itself mixes !! But trust the whole not quite yet!! So what do you say I can calmly give a little oil with in the tank? Or do I rather break something with it for a long time overlays me falls first nothing that can break but I’m just borrowing there!! Thanks already for your help !!