Hi guys, need your advice: My engine was making a rattling noise when its was first started in the morning for a few seconds. The car has 70k miles and is only 4 years old. Took it to my local dealership who initially couldn't hear the noise, went the next morning to have a look with a senior tech and he agreed it was there. They agreed that the timing chain, and tensioner etc may need replacing but isn't sure until the engine is stripped - face enough. Stripped the engine and have been told that the total cost of the work is almost £3000, MBUK are prepared to contribute £1000. I've attempted haggling with them and the bill now is £2500 of which they'd like me to pay £1500. Ive also been told that if i don't agree to have the work done then the bill for me is still £1500 because its all the labour for removing and refitting the engine. The dealership have suggested that the cause of the fault is usually the oil not being changed at the recommended intervals and its seen on high milage taxis but the car has full MB history with the correct oil changes. Any advice is much appreciated!