The 3.8 liter 2020-2025 use 5W30. The newer SmartStream 3.5 uses OW20.

 

And you'd think the OP's service manager would know that or at least look it up before giving him wrong information.

 

Dealers are often wrong more then they are correct.

 

Thanks guys, I'll let dealer do the oil changes so it's on them.

 

Given the bad advice in the OP, I would NOT take an "it's on them" attitude. I would show them the manual and insist they use the 0W20 oil described there.

I would also insist on synthetic oil. The manual states that if you use non-synthetic then the 5,000 mile severe oil interval applies. I maintain that nearly everybody should use the severe intervals regardless, but this low confidence in non-synthetic oil tells me it should not be used at all.

While you're at it confirm they are using oil that meets the ILSAC GF-6 / API SN Plus standards as stated in the manual, not some old GF-5 oil.

 

Read the manual, somewhere it might say to use as standard and what else you can use.

 

0w-20 only give you a few tens of a mpg advantage. 5w-30 will give you marginaly more protection under heavy loads in the southern part of the country. If you read the specs, they over lap as the high end thickness of 20 weight is hight than the low end of 30 weight. Stick with synthetic and if you love your car change it at 5,000 miles. Longer intervals gum up the oil control ring causing increased oil consumption.

 

Thanks guys. Will continue to use 0w20 per the manual