[mrmike]

My wife's '20 Ecosport Titanium 2.0 calls for 5W-20 oil. I just sold my other vehicle and have 10 quarts of Mobil 1 5W-30 left for that vehicle. Can I use this 5W-30 in our Ecosport without any problems?

 

[XR650R]

I wouldn't do it. If you lived in Tucson, you might get away with it, but 30 is just too thick for cold weather.
My other car is a Fiesta ST. It uses 5w-20 like most Fords, but in Europe they use 5w-30. I tried it for one oil cycle during the summer, and my mileage went down about 1-2 mpg.
Find someone who uses 5w-30 and give it to them.

 

[helo735]

You won't hurt anything by running 5w30. Especially Mobil 1.

Alternatively, you could just throw in a quart of 5-30 with every oil change, or use it to top up.

 

[earlmader]

I run 5W30 in my ecosport (1.0), S10 (4.3), Grand Cherokee (3/7), & Renegade (2.4) and I live in Northwestern Illinois.... you shouldn't have any issues at all. I never have...