What did you do to your Q70 today?

bought oil for my next change
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I must be nuts but I can feel a difference with the Rotella T6, the M accelerates way smoother.
 
Changed the oil.

Going to run Mobile 1 instead of my usual Amsoil to see how dark it is after 5k. Maybe I'll make the full-time switch.
 
Changed the oil.

Going to run Mobile 1 instead of my usual Amsoil to see how dark it is after 5k. Maybe I'll make the full-time switch.

O, there is a giant thread about engine oil for VQ35DE and I believe amsoil did pretty poorly. One of the best brand according to the very very long thread is the Castrol Syntec European blend. I will be switching to this as soon as I get my car back =(
 
If your vehicle is still under warranty I would follow the owner manuals recommended change intervals. After that you can use extended oil change intervals if you wish, as for when...it really depends on your driving habits and vehicle condition. Using a company like Blackstone Labs can help analyze your used oil and recommend an oil change frequency based off of their findings -> http://www.blackstone-labs.com/
Out of warranty though, modern synthetics have been known to last over 5,000+ miles.
 
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