Some questions about my nitro rc car

[prok0paros]

So I've got it started and i wonder if i need oil for air filter and if its normal to get almost no smake idling

 

[Chubaka]

So I've got it started and i wonder if i need oil for air filter and if its normal to get almost no smake idling

No smoke idling is ok. No smoke under throttle is concerning. Oil on air filter is a must especially if running in dusty conditions. Airfilter with sticky oil is an engine saver on these.