It was chevron oil, never had a problem with it before. All unopened containers. I just find it odd that this is the same oil from the same case, that was running in my ford when it threw a rod last year.
It wasnt older then a year or so. Im gonna be watching it real close now to make sure it doesnt happen again. I also try not to leave oil containers opened in the garage for fear I will mistake them for something else. All opened containers go into the chainsaw for chain lube.
Im gonna keep an eye on the texture and smell real close over the next few weeks and make sure I dont have something else at fault that seemingly works. Thanks for the replies.
Jeff