Well looks like the fitting of the VHS dampers will be on hold for a bit...
Checked the coolant today and I seem to be about 8mm down on normal.
Noticed a very slight drop a few days ago but after a few long haul trips its dropped again. Looks like it will be off with the cover tonight to have a look.
The car had its HG replaced at somepoint in its life prior to my buying it and it has SS coolant pipes fitted.
I guess ill top it up and keep an eye on it for the next few weeks.. temperature gauge remains the same as ever and I run an OBD2 reader which displays intake and coolant temperatures so I have a constant monitor of this.
Thankfully ive spotted this now and hopefully its a leaky pipe somewhere (im gonna guess the SS pipes as they were fitted about 3000miles ago according to the paperwork and I have driven a lot since buying the car so hopefully something there has came loose.
Failing finding that I guess Ill do an oil change to inspect the oil.. Ive some nice Semi Synthetic Millers XFD 10W40 DERV oil so ill plop that it give the insides a bit of a clean anyway for a couple of months.