Some parts stores and mechanics as well have a computer they can plug in your car to tell you what is wrong with your vehicle and it can also turn your check engine off but if you don't fix the problem it will eventually come back on.

I always use lemon juice,vinigar and salt.But if all you have apple and orange juice I would go with the orange juice because it is higher in citric acid.

If your dog has these spasms while sleeping your dog could be dreaming.