Hey guys just a question: Is there any thing that can be done to an engine to combat the effect of the number of miles its done? For example are there any parts that you could change to recondition it? I hope I'm being clear. Bottom line is that my engine has 100K miles on it is there anything I can do to lengthen the lifespan or should I just swap it out. I have a 3S-GE. JDM.

After 100K you can just have it rebuilt if your little heart desires, I don't think 100K should be the point when you get a rebuild though. I would say more like 175-200K.

Use a good synthetic oil, I prefer Amsoil