Did any of your Nissans suffer from the “strawberry milkshake” issue? The transmission line ran through radiator and leaked. These turning coolant reddish and destroying both tranny and radiator. X-terra, Armada, Titan mostly effected.
No—Bought Sentras for my boys.
Did have the piston rings in one of them shatter and score the cylinder walls, though. Killed the compression and ruined the engine.