Heating oil leaked near a fruit plant - is the fruit ok to eat?

Hey, my dad had some leftover heating oil stored in a container from when he had his tank removed, and then basically forgot about it. We noticed the other day that it had started leaking into the ground. A few feet away is a fig tree, and I’m concerned it could have contaminated it. There are no figs out yet (still a month or two away from those coming out) but do you think it’s okay to still eat them?