Just have two questions

1. WHen I use the car, I notice that my Temperature on the car doesnt go all the way to half like it used to go. It will only go to 2 bars, and my oil temp is good. I was jsut wodering if there is anything causing it

2. I had my alternator replaced and I am not sure if the mechanic did something to mess up my A/C. Im planning on buying the bottles to refill it but I dont know how many.



thanks for any help