Check your fryers now. What are you doing still reading this? Go, before you have to live through what I just did.
Alright, now that your back, I hope you didn't have to clean out about 5 pounds of old grease. I just did. Turns out, more than 5 years is the minimum amount of time to turn normal grease, in to jello. Not the fun kind either. This is the type of stuff you wouldn't use any thing relating to that fryer to serve Satan him self. Including the spoon I used to clean out most of it. It took an hour, and I still don't feel clean after a shower. I now look like a naked mole rat with pants and a shirt on. Yes, you read that rig