Just got home with RAC... engine went in fast lane of motorway.  I love my Alphard so much, I am now in bits.  I don't know whether trying to find a new engine and a mechanic to fit it (plus towing it to garage) is really worth it or if I should try to find a slightly lower mileage one in auto trader (perhaps with lpg to save on fuel) for around £5K - would much appreciate genuine advice?  Any costings on replacing engine or where to source... any vital warnings or things to avoid/look out for?  I am still in shock tbh...

I attach a pic of the underside of engine after the event happened.😢

Hard luck Chris, that underside of the engine looks pretty thin, I wonder if something has punctured it, maybe repairable I dunno, I wish you luck.

I can only offer my sympathy Chris. If you ever find out what happened and how it could be avoided then please let us know.

That looks like a something on or around a big end bearing has seized and then been rejected out via the sump. Nothing much can be done to avoid that other than ensuring regular oil and filter changes are done, and with these cars not always coming with any service history from Japan we are just hoping they were as well maintained as they appear to be from their general condition.