BMW 335i - oil cooler assembly being replaced...

[wax lyrical]

After an oil leak was spotted by the main dealer during a routine service last week. 130k miles on the clock.

Luckily I have the Mondial warranty in place and they had a Mini Cooper loan car available.

Anyone else had similar issues?

[SebringMan]

Not on an 335i but on an E46 M3. My oil cooler started weeping/misting from one of the end tanks. I ended up buying a brand new cooler after looking at the condition of other secondhand items, being bitten by an online motor factor's item in addition to my garage advising me to do so ; he felt it had failed due to it becoming brittle.

I asked about getting it repaired from radiator peeps and they refused to touch it.

What was a surprise for me was to see that the cooler is made out of Aluminium, Magnesium & Silicon. I know on wheels Magnesium has limited amount of time before it begins going brittle.