Oil - The Good, The Bad And The Ugly

Just reading up on what to use, I have been using the same type for such a long time but wanted to find out if it really is the best quality or best value

So, there are three main types to use, plus some speciality ones if you have the money

I have usually gone for what I thought was a good balance of quality and value, but there are definitely ones to avoid

So, when frying at a high heat, the better one is sunflower oil, its smoke point is higher (smoking oil is bad as this is when it releases free radicals which are toxic), retains its nutrients and is good value
It is usually not so highly processed

Vegetable oil is the worse, highly processed, few nutrients and cheap for a reason
Manufacturers can use any vegetable based source and not change the label

The best is olive oil, preferably extra virgin oil as this has all the goodness an oil can give you. Being extra virgin means it is cold pressed and retains its nutrients and fatty acids that you need
But, it does have a low smoking point, not good for high temp frying, but okay for baking and excellent in salads. (USA) olive oils have been found to not be as labelled and highly processed or including cheaper oils, check the labels

Nut based oils are good, but expensive. Sesame, walnut and peanut are good with strong flavour, divine in salads, not so much for frying chips

Coconut oil has a lot of online press detailing it's virtues and benefits but these are not backed with scientific evidence. The fatty acids can be very bad for you if eaten in excess or even just daily.

So, avoid vegetable oil. Use sunflower for high temp frying, use olive oil for baking, and low temp cooking and salads, use nut oils for something unique and avoid coconut.

But my question is, can the used old oil to lube my chain?