Easiest Way to Get Window Film Adhesive Off Of Window?

[Weezer]

When I purchased my van, it had window tint put on the passenger and drivers windows. It was already factory tinted down the side windows and the back window. Now the tint that was put on after it was purchased by someone is starting to peel off from the bottom of the window. I want to take it off of both of the windows but how do I get all of that adhesive off?

 

[Classic]

Oils are excellent for getting adhesive off. Eucalyptus or baby oil works best-and then you use a glass cleaner to get the oil off. Oil is far easier to remove than adhesive.

 

[Weezer]

Thanks Classic. I'll try that. I've used just about everything but that. I've even used Goo Gone and it didn't completely remove it. I'll try some type of oil and see what happens.