Hey OGs, a little bit of backstory here, we have done so many DIYs for the SC300/SC400 and we simply wanted to continue our tradition of helping out the community. We got this ES300 a couple of years back as daily driver, but it was lent to a friend in need for a good year right after doing tune-up on it and fixing the oil leaks. It was pretty neglected but the previous owner maintenance wise, but every cosmetic was really well taken care off. We got at 175k miles, but didn't get it back until 186k miles. Lately, I got determined to sorta bring it back to its former glory for a much comfortable daily drive. I've seen people here with 300k (or more) miles on the clock, and it seems it would be much feasible to maintain what I have now knowing what I've done to it so far than searching a low mileage one with probably the same issues that I'll need to deal with again.
The first thing we decided to deal with was the rear motor mount since it looked to be the most challenging. It was pretty straight forward, and didn't propose any problem that wasn't manageable. Soon as we got the motor mount brackets out, we brought it to a shop nearby and had new bushings pressed in. We then cleaned everything before reassembly as the previous oil leaks left quite a mess and might introduce new problems in the future. Reassembly was also the exact reverse so we didn't shoot it again. Good luck and hope this helps!
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Disclaimer: Use at your own risk. If you don't feel comfortable doing a procedure then don't do it. This information is to be used as a guide and is for illustration purposes only. By no means is my site a definitive source for the procedures listed; it is simply how I or the tutorial contributor did things. The tutorial contributor, and I are not responsible in any way for anything that happens as a result of following these guides.
Safety First: When working on your car put safety first. Use common sense and be careful. If you're doing electrical work disconnect the battery. If you need to jack up the car use jack stands and wheel blocks. Common sense is the key.