1998 SR5 with 173K. Pretty good overall shape, but mystery oil leak and looks like tranny is starting to go (losing power and bucking while accelerating). Wife and I on a tight budget and trying to spend as little money as possible, but concerned about putting a few grand into an old car with high mileage. Should I repair and keep milking the ol' girl or "upgrade" to something younger (we can afford something used with around 100K on it). Thanks for the advice! Dave