Synthetic oil is not for people who are too lazy to change their oil. Its for people who care about this little thing called thermal breakdown. A conventional oil will break down to its lowest viscosity when subjected to extreem heat or abuse,where as a high grade synthetic oil will consistently hold its viscosity no matter the heat or abuse(within reason).Its not a scam,its not lazy, its the truth. Mfg. like mobil 1 and Castrol spends $$$ and time testing these things. Just check out bob the oil guy,so much info it will make your head spin!
Bottom line: Daily driver,slant six, no frills, never above 4500 rpm..etc... run what ever you want to run,it wont really make a diff. Conv. oil if you are budget minded,synthetic if you can spring for it-for the perpose of being able to run a lower rated viscosity for better mpg,faster warm up,easier cold starts...etc.
High comp. big block,small block,turbo slant six 7500 rpm,clutch dumps,WOT shifts,burnouts,stop light to stop light just like to beat the piss out of what you drive,synthetic is the only way to go.
Thanks to a suggestion by a good friend who knows his ****,and only runs mopars, I like Schaeffers oil. Trust me your mopar will thank you.
