Thats prob $300 for all services / monthly... if u pay annually, u get 2mons free & I never get the useless security also. But the price has increased
The only way to pick choose correctly is do it yourself thru the mopar owner's website
I find the parts buying sites very helpful as they normally have the exploded view drawing with part numbers. Here's couple:
Otherwise, your buying online or eBay manuals
If it's a brand new truck, mpg will get better as the engine breaks-in...thru 10,000 & more in my exp. Also an oil change ~2K to full syn will give a slight bump (I do this in case there's any metal particles from break-in of new engine in the oil). Next oil change (~10k) can give another...