Synthetic engine oil isn't refined from crude like petrol, it's synthesised, hence 'synthetic'
DB
Ahhhh, some refined crude oil can be classed as Synthetic oil due to the higher temp used to burn off the sulphur, this is a legal loophole that the oil companies can use, and they can call it synthetic engine oil.
They've gone very quiet!
Yes, well some of us have to work at weekends, lol. I didn't know about that loophole Zugara, I was just making a casual suggestion. I guess mineral and part-synth oils can't get away with being more expensive than fully synth even if the price of crude goes up because they're considered to be lower quality who knows, I'm no expert.
DB
LOL, I am working too but would be more productive if I spent less time on here!!
Now get back to work