Do not use this medication if you are allergic to amoxicillin or to any other penicillin antibiotic, such as ampicillin (Principen, Unasyn), dicloxacillin (Dycill, Dynapen), oxacillin (Bactocill), or penicillin (Bicillin L-A, PC Pen VK, Pfizerpen), and others.
If you drive an average car, like a sedan, the average transmission fluid change cost will be around $60 to $100. Not too shabby. Normally shops are less expensive than dealerships (dealers are know to pad bills), but be wary of what kind of shop you bring it to.
The risk is poor shifting and vibration from the transmission when you use anything but the OE fluid. Spec for your car on a drain and refill is about 3 quarts of fluid, with almost 8 quarts required for a complete change-out. With dealership price of the fluid running about $12/quart, even a drain/refill is $36 worth of fluid.