Best way to spruce up a used car? Fresh oil change (and flush)!

[Goat Blower]

I've seen that one as well elsewhere. But one true story, I had a 1998 GSX come in when I was fixing them in my garage around 2000 or so. They wanted me to change the oil and fix a few things. I drained the oil and about 12 quarts came out. I asked the owner's boyfriend why there was so much oil in there and he said they thought they had to add a quart every week, so he did and didn't bother to drain any. Oops. The car only had like 40k miles too, luckily it didn't do any damage.