right a little question FOR U LOVELY PPL......so many ppl are telling me diffrent things even tho they dont have an audi or vag.... so im hoping one of u brainy lot can help ...here goes....

my car is an 2005 a4 t fsi 2.0ltr i brought it at 62,000 miles on it last year ....its had 3 full services as its now on 97,000 ...the thing is its making a little bit louder nose from the engine..ITS always been a bit loud the engine anyway ..but i dont know if im just looking for noises but. the oil i been using like the audi instruction book states 5/30 but ppl are telling me now to go up one stage as the engine is getting a little bit more wear on it so the slightly thicker the oil the better it will sock round the pistons ect.........

----is it true to go up one stage in oil...like 10/40 or 10/35 slightly thicker...?....

thanks guys xx