I recently changed the oil in my 2011 Durango with 5.7. Out was 6 qts of PUP 5w-20 and 1 qt of PPHM 5w-20. In was 5 qts QSUD 0w-20 and 2 qts PPHM 5w-20. My fuel efficiency went down almost 1.5 mpgs and my oil and coolant temps are higher than I have ever seen despite the fact its been in the 50s and 60s instead of the 100s outside temp. with the PUP my coolant would run right around 200 to 205 and oil would be 190 to 205. the the latest oil change my coolan temps are now 215 - 225 and my oil temps are 215-230. I have never had a vehicle with all the sensors this thing has to monitor the differences oil makes before. I did not expect to see that much of a difference though. Oil filter was the same Purolator Boss out Purolator Boss in. I will be changing the oil again around Late November to Mid December to VSPML 5w-20 and a Fram Tough Guard Filter as I registered for the Valvoline Engine Warranty program. Just though I would share my observations. I know in the past I have gotten better efficiency with PUP but I was never able to see all the temps and pressures that my Durango has for my viewing pleasure.