how often do i need to change my spark plugs? i dont think i need to just yet but i just need to know when.

 

I would do it at least every 30k.

 

with autolite copper core plug only being $1.50 each i would agree, every 30k or so.

i know my monte i didnt do to about 100k but the were the factory iridium ones and i only changed them due to the miles.

I gotta change all that on my mustang this weekend as well. already have the plugs & wires sittin at my parents, just need to get them on there