The Direwolf20 pack regularly lag-crashes when I near large amounts of oil

Alright, my requests on Minecraft Forum and the private FTB support site I have not gotten an answer to this question. The problem is that my FTB instance lags out so bad when I near a large (almost taking up an entire chunk, based on my guess) Buildcraft oil spawn. I generally last about three minutes before the console starts outputting memory errors and the game lag bombs so bad you have to kill it with Task Manager. Here's a log of what occurs on the console. I've removed the chunk loader I placed in the area and it should also be noted that I am playing using the Direwolf20 map available in the launcher. Other maps work fine using the same pack. What can I do to prevent this?