what would you say are the Pros and Cons of switching from Regular oil to Synthetic oil. What about Synthetic blend?

 

with synthetic blend, you might as well use regular oil, but full synthetic oil would be the best to use. synthetic oil keeps engine parts cleaner, and help them last longer. synthetic oil can probably gain like 2-3 horsepower. i use mobil 1 every 3 months

 

semi-blend is a marketing ploy.