Youtube Recommendatons

Carryfast:

Dav1d:
edit -I do cars, providing engine teardowns of mostly big cc USA stuff, engines that have let go/ locked up etc get torn down to show the internal carnage.

Mechanical nightmare - just like the just rolled in channel

Many of them contain the laughable proof of the ridiculous complication and resulting mechanical unreliabity and expense of multi OHC multi valve designs.
Often producing less power than an old school pushrod V8 which will run for longer and can be rebuilt in a weekend.
There is one which shows how Merc V8s are stopped/wrecked by a silly internal oil feed pipe costing a few pence which can’t stand up to heat in addition to generally badly designed lubrication system.Pure comedy.

The Vauxhall Insignia diesel engine can be written off by the oil pick up pipe seal. It goes hard over time and fails to maintain pressure. By then time the oil light comes on, engine is scrap.
Then there’s the problems Audi has with one of their 2.0 diesels engine several years back, also oil pump related.