V50 D5 Coolant

[ucb]

Noticed when filling up the screen wash that my coolant is at least an inch above the recommended level. Coolant looks brown and definitely not the pink colour I thought it should be.
Is this HGF? oil leak? Dpf problem? Or am I talking out my arse?

[morgrp]

Did you buy it second hand? it may have had a sealer put in to cure a small leak.

Best test is a pressurisation test. take the expansion tank cap off when cold, replace it, start the car give it a good rev, shut it off immediately and then slowly release the cap - if it hisses at all it will be pressuring which is often a sign HG failure

HG failure will usually (although not always) feature some degree of water loss - other signs will be temperature fluctuations on the temp gauge whilst driving and the heater will not work very well.

Try a coolant change to see if it discolours again

[ucb]

Cheers, will try.

Car runs absolutely fine though.