Nissan Topic: Engine
The transmissions of some 2005–2010 Nissan vehicles are under attack from radiators. Cracked radiators are leaking coolant into the transmission, and when it mixes with the transmission fluid it creates a toxic hell stew that irreversibly damages everything around it.
Nissan says their timing chains are just noisy, but not defective. Try telling that to the owners who have seen loose timing chains rattled their engines apart, resulting in thousands of dollars in damages.