got a 98 dc2 ls wth a/c, it is perfectly working and (gets decent cold, but not super cold like new...) the mechanic says the pressure is good, and i can just add refill cans and it will be good, now my question is how many cans do it put and will it be colder than before??

 

Get a can of refrigerant with a meter and check to see how much pressure there is.

 

how do u look at the pressure? i mean what's the avg?

 

on the pressure gauges it says its good...

If the mechanic says the pressure is right, it probably is.

Remember that mechanics like to screw you out of as much money as they can.

 

You cant say that all mechanics screw you out of money. Thats like saying that all black people are unemployed. Blanket statements like that are the reason why misinformation is spread like cancer.