Is there any negative effects of switching back to Petroleum oil once Synthetic oil has been used?
Related Questions
- Is there any truth to the notion that cars should be running petroleum oil during the break in period before switching to synthetic?
- I bought a new car a year ago, and Ive been using petroleum motor oil in it. Could switching to Amsoil now cause mechanical problems?
- Is there any negative effects of switching back to Petroleum oil once Synthetic oil has been used?
