So I didn't want to start a new thread and I've been doing some reading on the Shell Rotella T6 5W-40 oil, but I see it's mostly been used in older BMWs with iron blocks. The M54 has an aluminum block. My question is, with all the detergents needed for diesel applications, would it not have a negative effect on the internals of a newer aluminum engine? Just asking, I am clearly not a scientist. I've already put 1000 miles on the x5 and haven't noticed any oil burning, but I want to change the oil since I don't know when it was last done and the T6 appears to be a good choice...

Sent from my SM-N950U using Xoutpost.com mobile app

You're overthinking it - its a great oil and by all Blackstone analysis I've seen it breaks down and the wear metals on samples with 15,000 look like they are 7,500 mile samples and the TBN is amazing on it



I'm 45k on my E53 with it, and my wifes E70 diesel has been using it for 25k now, both run fantastic.

Okay, fantastic. I tend to do that (overthinking), but never when it counts, like when buying a car [emoji23]

Sent from my SM-N950U using Xoutpost.com mobile app