i'm on my second Toyota. In my 85 i just ran conventional oils, except in the transmission, transfer case and diffs. I ran cheap synthetic oils because it seemed to work better in sub zero Wyoming weather back then. nothing fancy. it had a 5mge. Stupid simple to work on. I still wish I had kept it 8 years ago. but having two kids and a wife at the time made it too small. and now with a 3rd kid, impossible.
old 1985 yota, custom springs, 5MGE swap, 33" tires, 1" homemade body lift to clear the engine swap, custom front cross-member, engine lift, transmission lift, transfer case tuck. cheapo shocks, marlin crawler HD clutch, 4.10's, Lincoln locked,flatbed, armor and Tacoma grill.
I now have a 2007 Sequoia. While its just a family hauler now, and I've only had it two months. I just stuck a leveling kit on it and its running 265/75/16's on it. it'll be a light duty back country cruiser as soon as i escape ND. I just switched it over to synthetic oil. It seems to idle smoother and quieter. Plans are to change out the diff's and transfer case to synthetic and maybe the transmission.
I just did a timing belt on my Sequoia. I took me about 4 hours total. i skipped doing the water pump, the belt that was in there was not very old. The previous owners shop didn't leave any marks that the belt had been done. I didn't drain the coolant. I removed a little of the coolant from the radiator. Just below the upper radiator hose. Then i hosed a hose pliers to plug off the upper hose. And took everything apart.
One secret i figured out is to align everything on the VVTI engine to top dead center. then rotate the crank back about 50 degrees. this will keep your cams from jumping when you try to install the belt.
When you do the timing belt, purchase one with all new idlers and a new tensioner. it makes putting everything back together much quicker and easier.
New yota