Greg Chevy Owner

Anyone's thoughts on using synthetic vs Fossil fuel old fashioned oil? How does engines accept this? Obvious modifications to the engine I guess? Im not a mechanic. I want the best for the engine and dont want to cheapen the life because of the cost 3x per year to change the oil. Also I always feel like getting the oil changed more often is better. Used to be every 3 months but now its every 5 months? I just bought a Chevy Silverado 1500 But even in My Ford Explorer I had they said I can do it every 5 months. Seems to long to wait to me. Thoughts Thanks