I agree - no need to worry about the timing chain this early.

Regarding the oil, I believe you are fine with Mobil1. The cost/value equation does not make sense for me with Delvac 1. While it is true that it suspends contaminants better than M1, those contaminants are still in the engine. As such, I prefer to continue changing my oil at the regular 2500-3000k mi intervals.

__________________
Chris

'04 ML500 - 53k, Inspiration Edition, Desert Silver
'11 Audi A4 Avant - Brilliant Black
'87 300SDL sold
'99 C280 Sport sold
'85 190E 2.3 sold