[superduty5.9]

Hey guys, I got this 2007 T&C 3.8L. I've had it about a year. It never used a drop of oil then I changed the oil and now it's going somewhere. It has 103,000 on it now and runs good. No leaks and don't see any smoke out the tailpipe even at start up. It calls for 5w20 oil and I have a bunch of Pennzoil 10w30 so I used that. Do you think a change in brand and grade would cause this. Last week I was putting in some washer fluid and thought what the heck I'll check the oil (never used any before). It didn't have any on the dipstick. It took between 2-3 quarts to get back to full. It gets driven daily by my wife but only to take our daughter to school. Not many miles at all. Last weekend we took a trip to WI around 1000 mils RT and it used another quart.

What do you think?