Je viens de trouver un lien très intéressant sur les LDR (en anglais)
http://www.geocities.com/dtmcbride/home_garden/auto/antifreeze.htmlEn particulier le passage :" you should avoid mixing traditional coolants (blue, yellow or green) with Organic Acid Technology (OAT) (orange, red, pink) or HOAT (yellow) coolants. The OAT will cause
precipitation of silicates in the green type and corrosion protection is greatly reduced. "
Ou encore : "
Brown could mean several types have been mixed, Or reddish-brown rust if the coolant hasn't been replaced for a long time. In either case you should flush your cooling system and add new coolant. "
Ma mayo pourrait donc être une précipitation de silicates et non de l'huile !