Any idea what type of oil was used on the last change? Look on the sticker, it may be listed. Some oils are rated for higher change intervals, but I don’t really care for that. Also, the type of driving you do makes a huge difference. Multiple short trips vs longer highway speed commutes makes a difference too. Obviously, check your oil and make sure it isn’t low.
I recently purchased a vehicle with a rebuilt title from a front end collision, and it was repaired in 2018, and has more than 50,000 miles since the repair. I was confident that any lingering issues would have been addressed. If this vehicle were recently flooded, and you are the first owner after repair, I’d be telling you to think real hard about whether to go ahead with the purchase. Since it has been 8 years since the repair, I’d feel better about it.
Also, can you find out from the owner if the flooding was fresh or salt water? Either way, I’d be crawling around underneath and looking for corrosion.
u/jetty_junkie mentioned it already, but talk to your insurance first!!