I use Rotella T6 5w-40 in my truck....

..and in my Minivan, too

 

I'm surprised i havn't seen anyone running royal purple. I run royal purple 15w-40 and change every 12-15000 miles. I used to always run dello at 5000 mile intervals and my dad swears by it, but I just got the itch to try royal purple and have been running it for about a year and a half now

 

Delo 400 15W40 from Costco and Fleetguard Stratapore LF16035 every 7500 miles (which is about every 3-4 months).

 

AMSOIL AME 15W-40, AMSOIL full flow filter and AMSOIL remote bypass filter using oil analysis.