Which is cooler line is the return on the AOD?
Which is cooler line is the return on the AOD? Run hot fluid from the tranny to the new cooler first, then to the radiator cooler, then back to the tranny. In hot conditions, you'll knock most of the heat out with the new cooler significantly reducing the load on the radiator. Is the AOD return the lower Fitting on the transmission? Yes, the AOD return is the lower fitting on the transmission. The AODE/4r70w return is the upper fitting. Look to the trans for this as someone "may" have altered the lines at the radiator somehow. I personally run...