My customers got a lovely little Hyundai Elantra GLS two years ago as a birthday present. It was in like new condition, with not alot of miles on it.
In the past two years, my customers have taken countless hour long rides, and a few long-distance rides (about 3 hours each way). And not once have my customers changed the oil. Which is apparently bad GM MDI
Anyway. It's my understanding engine flushes are bad, even though my customers think it would benefit my car, because apparently, that's how gunk is built up.
My customers was looking at Amsoil's Engine Flush, which doesn't appear to be a typical engine flush, as it's just stuff you put in before an oil change, and let the engine run with it for about half an hour.
My customers is also stuck with a new car battery for my customers little car. How exactly does one determine what it is? On a previous Y! Answer, my customers discovered that apparently Interstate Batteries/ Hyundai make their own unique battery. But Batteries Plus also carries apparently acceptable batteries. Can anyone clear the air? What's more, how can one tell what type of battery a particular battery is (i.e. conventional, maintence-free).
A good solid answer is most appreciated!