Hey guys... As you can see in my signature I have two cars and using two different oils. I would like to consolidate to using one of the oils. What are your opinions having both on the Rotella? (does not meet Porsche engine specs but I am a fan of the HDEO's and have used it in other high performance cars. I also like using the HDEO's in the Rover. A big truck that weighs a lot and sees a lot of driving time. The 911 is a weekend warrior.) Using the Ultra on both makes most sense but I want to hear some of your thoughts...
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