Unknown existing engine oil

[jona]

Hello, I just got a 2006 trailblazer for my wife. It has a full tank of engine oil in it. I do not know what type of oil it has in it. The manual says not to mix oil brands. I have ordered the oil that the manual says use. Should I just premix oil and gas until the current oil is used up? I am sorry if this has been asked before, I did a search and found nothing.

[Bruce!]

So were talking a 2 stroke here?

[jona]

2 stroke.

[BlackSheep5]

It's not going to hurt it if you mix different 2 stroke oils. I've had 2 Trailblazer 250's and have done it when switching oil brands with no issues.