Regarding the louder engine than normal:- Get the timing chain and tappet settings checked and adjusted if needed these two things could be the reason for a louder engine noise. Otherwise it's a strong engine and parts don't wear out so quickly.
PS:- Get the timing chain tappet settings checked under your observation, because these people at SVC are intolerably lazy to open the engine head. OR they will just listen to the engine noise and tell that its nothing to worry about.



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