My parents are looking at buying a Liberty H6 spec B today, but I'm concerned about white crystal deposits on the expansion tank inlet hose. The car has a full service history (last service within 6 months) and last week had both a RWC and RACV pre-purchase inspection done - yet I was the only one who picked up on this - nothing in any reports.
Unfortunately I didn't get a pic of the expansion tank, but here's mine with annotations showing where it has these deposits.
- exp_tank3.jpg (72.46 KiB) Viewed 2001 times
I did however get 2 pics of the inside of the tank which shows white/green crystals, and the contents looks quite dark.
- exp_tank.jpg (87.01 KiB) Viewed 2001 times
- exp_tank2.jpg (61.87 KiB) Viewed 2001 times
I know H6 engines aren't as prone as the 4 cylinders to HG failure, but this is still a concern. I assume the crystals are the result of incompatible and/or mixing coolant, coupled with overheating. The dark coloured coolant may be the result of a deteriorating inlet hose lining as I experienced the same and rectified with a hose replacement & full flush. There was no indication of overheating on a test drive however (temp was 30c+ at the time, 3 in the car & A/C on)
Any advice would be appreciated.
