I am in the same boat. My '03 Speed began to have more and more trouble starting when the weather turned colder...in NJ lately it has been 15-25 degrees at night and in the morning. I bought an Optima red and threw it in thinking it would solved issue. Car starts totally fine sometimes and not so well other times. Looked at negative terminal and noticed there is a crack in it. It is not able to clamp all the way around terminal.
Negative has two wires, one I believe can not be changed...goes into a loom under the battery tray, so I have to change the terminal and not the wire.
Is this hard to do??? Looks like a nightmare to open up the part where it clamps on the wire...will regular pliers do it?? Not so sure...
What do you guys think....
thanks.....