Hi.I am debating purchasing Phillips 66 Dexron VI for my 2013 Duramax with Allison transmission.I have ran Dex VI for 250,000 miles so far and my intervals fall under Severe 45,000 miles since the truck is used for hauling.My choices are whatever licensed big name Dex VI is on the shelf or the Phillips 66 synthetic.Also with the synthetic Dex VI can it run longer?
Here is info on the Phillips 66 Dex VI: http://site.industrial-oil.net/pdfs/Conoco-Dexron-VI-Spec-Sheet.pdf
Here is info on the Phillips 66 Dex VI: http://site.industrial-oil.net/pdfs/Conoco-Dexron-VI-Spec-Sheet.pdf