Back in the 50's Prestone came out with a manufactured oil. The American way "if it cost more it must be better." Cadilac dealers started using it in all their cars. They soon found out the upper piston rings started wearing out. They had to do a bunch of o-hauls under warranty. It was soon discontinued. That has always left a bad taste in my mouth about synthetic oil.
Some things are just better naturally. Wood is still one of the best building materials. Cotton & wool are still the best fabrics. Remember the Dacron suits from the disco days. I stick with Petroleum motor oil except my late model car that specifies Synthetic. The only real advantage to syn. is it doesn't leave carbon deposits from high temperatures.
George
