I've had a weep of hydraulic oil from the oil cooler for a few weeks - not much but enough to be annoying. It drips onto the plate where the diesel water separator is mounted, and at first I thought it was a diesel leak, as being adjacent to the water radiator all there runs warm and the oil was very fluid. But no, eventually I convinced myself that under certain conditions one of the swagged joints in the matrix was leaking.Never mind - only £238 for a pattern one, or £100 more for a genuine one

So I bit the bullet and ordered a pattern part. When it arrived it was damaged - the mounting lugs were all bent, which probably wouldn't be too much of a problem - they should stand up to bending back, but more seriously there was impact damage to the core. Only small as though it had been jabbed with a screwdriver, and if it had only been on the fins again it probably wouldn't have mattered - but no - it was straight onto one of the swagged joints so I wasn't prepared to take the risk.
The supplier was happy to replace it but had none in stock, so a few days passed then on Thursday I got a call to say that the replacement was ready to deliver, but could I pay for it please and they'd credit me on returning the faulty one at my cost. Trying to control my blood pressure, I gently explained that that wasn't going to happen and perhaps a brief reading of the 'distance selling regulations' would let him better understand his obligations

So UPS turned up yesterday - (their local chap is always so friendly and greets me like a lost friend !) with the replacement, which I got round to fitting this afternoon.
With hydraulics you never know just how much oil is going to pour out when you change things. I've equipped myself over the years with male and female blanking plugs in all the common sizes and make a habit as soon as a joint it disconnected, to blank the male and females to avoid gushers - often the second joint opened will allow air in and you get covered in hydraulic fluid.
So, old towel under radiator, old baking try to catch oil, and basically just a case of undoing cleaning and replacing. In this instance remarkably little oil escaped, it all went to plan, and the only damage was to my wallet
