Originally Posted by
CurtCrossfire
I’ve got a 2003 auto xfire, I know there’s no dipstick and the trans is slipping in 1st and 2nd gear, I was told to put sea foam or tranny slip fix but how would I go about doing that? I’ve looked on here for forums and videos but can’t seem to find it, is it possible to do that without having to take it to a garage? Thanks
You could make a mistake like that, but I would not.
IMO, what the car needs is what we call a "Transmission service" where they replace fluid and filter. Your car is 19-20 years old, it's way past time, this should be done every 100,000km at least. Most let it go until the transmission acts up, which seems like neglect to me. My car got all new fluids (ALL) in2016 right after I bought it, at around 31000 miles (45,000 km or so). In fact, it's pretty much time to do it all again.
I would NEVER put additives in an automatic, just new filter and new fluid.
As to taking it to a garage or not, that depends on your comfort level with the procedures involved in auto trans service. The Manual is super easy, auto not so easy.