Yellow froth inside and around oil cap?

[Gerard]

I bought a Smart 453 (2017) about six months ago. It is the one with the Renault Twingo engine. Can anyone tell me why I have this yellow froth inside and around the oil cap and if there is a remedy? Thanks

[450ken]

Could be antifreeze getting into you oil try an oil sample analysis to check and see if it is antifreeze.

[MiniMercedz]

Typical of a coolant contaminant to the oil, gasket leakage most likely.

[Gerard]

15 hours ago, Gerard said:

I bought a Smart 453 (2017) about six months ago. It is the one with the Renault Twingo engine. Can anyone tell me why I have this yellow froth inside and around the oil cap and if there is a remedy? Thanks

 

[Gerard]

Many thanks to the people who replied. I’ve now got it booked into a Smart dealership to resolve. Thank you and best wishes.  Gerard