Hi Marc,

Thanks for your reply & apologise for the delay in replying back to you.

The initial transmission oil was a little milky sort of colour. However problems still presist even after we changed the oil completely.

One strange point we noted was that the machine seems to be well in the morning after the very first start up.
And the problem came back the moment we turn the engine off and start again.

The pressure on the valve was normal.

Any ideas what might be the problem ?

Kind regards

Stan