1997 Maserati Ghibli 2.0L Petrol · P622 KTS

The densely packaged engine bay of the twin-turbo Ghibli II creates immense underbonnet thermal loads. Aging aluminium-and-plastic radiators, brittle header tanks, and tired coolant hoses perish over time, leading to sudden coolant loss. The aluminium-alloy cylinder heads and block have zero tolerance for overheating, which quickly causes warped cylinder heads and blown head gaskets. Specialist recored all-aluminium radiators are strongly recommended.

The Ghibli II's 2.8-litre V6 uses twin water-cooled IHI turbochargers operating at high boost pressures. If oil change intervals exceed 6,000 miles or if previous owners failed to allow a gentle idle-down cooling period after spirited driving, oil coking develops in the turbo bearing cartridges. This degrades the shaft seals, causing oil consumption, blue exhaust smoke, and boost lag.

Although the Ghibli II featured improved galvanisation compared to 1980s Biturbos, UK winter road salt still causes localized structural corrosion. The fabricated steel front subframe that supports the engine and steering rack, the rear chassis outriggers, inner sill structures, and lower rear wheel arch lips are primary corrosion points that require careful inspection before purchase.