Picked up another 4Runner...this one in a 2001 with only 150K miles on it. Pretty bone stock so I have gone through and replaced ball joints control arms and a few other things to get it ready for a 2" lift (seems all bilstien kits are on backorder). Anyway, I wanted to also put a new radiator in just to be safe and ordered what I need...all OEM. So when I went to take out the old one I noticed that someone had disconnected the transmission lines and just looped them so they did not run through the radiator. The coolant look fairly clean and the transmission fluid looked fine as well. Anyway, I hooked the new one up as it should be, and I am wondering if maybe they had a leak in the radiator for just the transmission fluid and this was a "fix". Just odd......