I am having presently the timing belt changed at a shop I trust; the mechanic who is working on it called and recommended changing the seals to stop the oil leak.Bear80 said:Where is this oil leak you all speak of?? My 94 4runner had over 250k and never had the front, or rear main seal changed. Infact when I changed the clutch, the rear main seal looked absolutly fine. I know that mine leaked oil from the valve covers but that was quickly fixed as I cannot stand leaks. That was one job that I didn't like along with changing the t-belt. Also I had the little o-ring around the oil cooler seep and that was a quick fix. When I first got it, the power steering also had a leak. A toyota rebuild kit took care of that. There isn't places for oil to leak out of these.