Hi,
I'm not sure how it would have gotten into the coolant. However, it can get into the oil if the vehicle is flooded badly enough.
Okay, I'm questioning if the fuel pressure regulator may have failed and allowed too much pressure to the injectors. What we need to do is check fuel pressure and the regulator. You will need a fuel pressure gauge, but most parts stores will lend one to you.
Follow the directions on this link:
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
If you look below, I attached the manufacturer's specification for pressure. This is where I would start. Also, since the vehicle ran out of fuel, there could be dirt in the fuel injectors causing it to leak fuel into the cylinders. But, let's first confirm fuel pressure.
Let me know what you find or if you have other questions.
Take care,
Joe
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Sunday, June 13th, 2021 AT 9:26 PM