Pressure oil

Mañana ire al Aerodromo y pondre en practica todas vuestras instrucciones

Hi Roger, thank you, I find it difficult to find that product by its commercial name in Spain, here as a grease remover that does not attack the paint we use one with the commercial name KH-7

Isopropanol also seems to do the trick.

Thanks Roger. On my Tecnam P92, I had that problem, I extended the length of the exhaust that protrudes from the belly by 6", it is not a very aerodynamic solution, but I have a white belly without traces of exhaust smoke

Exhaust pipe:

I've had two Tecnam's that was getting carbon monoxide in the cabin. About 10 - 20 ppm. After all the trouble shooting we learned it is because the exhaust pipe is too short. We extended it 8" and the CO meter now reads zero.