Hello all, hope your all good....

First, oil pressure switch goes - spraying oil everywhere, problem fixed no more issues with oil leaks.

Secondly, appears a head gasket failiure - car is on 109,550 and otherwise, still very strong.
Filler cap very white, oil white,ish and water dropping very quickly, perhaps reaching the coolant low warning every 25/30 miles.
However, the coolant was not that discoulored but had bought some crap up into the expansion tank.

Had head gasket replaced at a local garage, also a good friend of a family member. Head gasket clearly failed, marks where the
water/oil ha dbeen tracking across - but on the block (underside) of the gasket. Block and cylinder head checked and assured, no warpage.

One new gasket set and chain later, car sounds smoother than it ever has and pulls very well but a few days later, i notice water has dropped to minimum again. Hoping just air lock or something, I topped back up but it keeps dropping still. Garage have had the car back overnight, drying it out,
pressure tested the coolant system in the morning, holding pressure but dropping minimally (said it was normal leakage through the tester).
Garage say there is definateyno water leakage externally so must be internal and is either a cracked block or head......

Have checked the expansion tank with an MOT tester for hydrocarbons and only reveals about 15 on the guage. This same test was done before
the HG was replaced and it stated straight away 300 !!

By the way, the oil now looks grey !?! Coolant quite dirty as garage flushed it and stated its disturbed more crap and will take a few more flushes to get rid.

Do you think something is cracked ? What are your views on this stressing issue lol ?!?

Also - Car still sounds lovely, smooth and pulls nicely.....

Thankyou for your time, bit of a long read haha