![Froth/scum under radiator cap. I've replaced the cap twice, flushed the coolant twice, and am not burning/losing coolant. No coolant and oil mixing under oil cap/dipstick. Clean the cap and it keeps Froth/scum under radiator cap. I've replaced the cap twice, flushed the coolant twice, and am not burning/losing coolant. No coolant and oil mixing under oil cap/dipstick. Clean the cap and it keeps](https://preview.redd.it/1tuf7y7cbqv51.jpg?auto=webp&s=368b4f0916c841d1f97967d35b65c5171536c33e)
Froth/scum under radiator cap. I've replaced the cap twice, flushed the coolant twice, and am not burning/losing coolant. No coolant and oil mixing under oil cap/dipstick. Clean the cap and it keeps
![BMW 3 Series Questions - there is engine oil in my e46 radiator but there is no water in the en... - CarGurus BMW 3 Series Questions - there is engine oil in my e46 radiator but there is no water in the en... - CarGurus](https://static.cargurus.com/images/site/2018/06/24/13/21/pic-8158068562897210386-1600x1200.png)
BMW 3 Series Questions - there is engine oil in my e46 radiator but there is no water in the en... - CarGurus
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