Gerard Posted April 10, 2022 Share Posted April 10, 2022 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 Quote Link to comment Share on other sites More sharing options...
450ken Posted April 11, 2022 Share Posted April 11, 2022 Could be antifreeze getting into you oil try an oil sample analysis to check and see if it is antifreeze. Quote Link to comment Share on other sites More sharing options...
MiniMercedz Posted April 11, 2022 Share Posted April 11, 2022 Typical of a coolant contaminant to the oil, gasket leakage most likely. Quote Link to comment Share on other sites More sharing options...
Gerard Posted April 11, 2022 Author Share Posted April 11, 2022 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 Quote Link to comment Share on other sites More sharing options...
Gerard Posted April 11, 2022 Author Share Posted April 11, 2022 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 Quote Link to comment Share on other sites More sharing options...
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