newbie and I don't wanna damage my ride

[Marena Menta]

Can I use 10w40 oil in my 2001 ford expedition or will it cause damage?? I asked the guy at autozone and he said that was the one to use but it says 5w20 on the oil cap.Really can't afford to mess up my ride that's why.

 

[swshawaii]

5W-20. No reason to stray from the Ford owners manual. (Page 248)

Owner’s Manual Printing 4 (PDF)

Scheduled Maintenance Guide Printing 5 (PDF)

 

[Machine090767]

Trust The 710 cap (Oil Cap)

 

[Mike65]

Welcome.