I have been using migweld 5 up till recently and have ran out, I have the opportunity to get some gas but have been told it is an air products 15% mix, is this useable for car repairs with thin material or is it just for thicker stuff. If its unsuitable I may sign up with boc for some argoshield light as the y size bottle is good value, far better than anything else I can find either outright purchase or rental.