I downpatched to the right version and all, I do the same thing as WR, putting oil where it spawns then malrailing it, but it doesn't work.

You may not be on the right version. Underwater oil explosions weren’t added until patch 15b.

If it still doesn’t work, you may not be putting oil in the right place or you aren’t timing the malrail correctly. At that point it’s just brute-forcing until you get it.

worked perfectly, i got the wrong patch lol, thank you !