Spray underbody with oil ?

My 92er 190E has slight corrosion at the edges of welded parts of the underbody. Is it recommended to spray the underbody with oil. If someone has good years of experience with it, let him report about it and call an oil recommendation. As far as I know, one has always sprayed with oil. Until then with a lot of advertising the inhospitable Teroson and similar means were pressed into the market. They have then caused then in case of damage (stone stroke etc) large rust plagges. m fg ortler