I don't believe it is legally required to keep detailed records and receipts. If you have a service thing, create an appropriate list following the recommendations in your car manual.
It's pure marketing hype. "5G" means a collection of newer frequencies that carriers use to transmit stuff to your cell phone part of the cellular data. The thing is, no one tells you if If "3.5 GHz: Band 48" is faster than "3.7 GHz: Band n77" and you can't tell unless things are extreme. If...
I worked at a hormel plant for a while. They make a cob smoked layout bacon better than anything else on the market. I'm not sure if what is in the package is the same as that was.