Car appreciation... the aesthetics, the engineering, etc

Two bottles of radweld and a prayer?

I've got a coupe/c70 2.5t (its the 2.4 that the later 2000> cars used that became the really weak rod "r", but with a light pressure turbo.
I'm still 50;50 if it's headgasket is actual gone, it looses Coolant somewhere. But it's not going in thr oil, it's not ending up in thr auto box (shares a Coolant rad with the gearbox), so could just be a bad turbo Coolant seal (dumps Coolant into turbo when on boost) or matrix partially blocking which us causing the Coolant to flow less.
Compression test on cold and hot engine is solid across the cylinders. Occasionally decides ita gonna run on 3 out of 5 cylinders when cold, coils are all good so think it's just the wiring harness being a dick.
Next step would be proper leak down test, but don't habe thr gear so got to bribe someone I guess.
Rest of car is excellent, it's got almost envy option, is in metallic racing beige, with double beige leather interioer, bbs 17/18" factory wheels and the epic dolby pro logic setup, abd full history with only two pervious owners, ome worth saving! Just got to get around to it lol

Oh yeah, also the later engines you get in v70r and 2.4 and 2.5t v70/c70 are prone to hairline cracks in the head between cylinder abd Coolant passage. Coolant doesn't escape here, but under boost or high duty the combustion gasses force through thr little crack.
Very hard to spot even with head off, you need that uv or blue steel dye to find it. I imagine if not a simple fix that's what's wrong with mine also