Petron Corp. is negotiating with a Singaporean company to bring in advanced technology that would determine the exact location of the oil tanker that sank off Guimaras island and siphon off the remaining bunker oil still in the vessel. Lori Tan of the World Wide Fund said Petron, which chartered the ill-fated M/T Solar I, will bring in deep-sea contractors who will use a side scan zoner to determine the wreck’s actual location on the seabed, a remotely piloted submersible to find the leak, and hot tap to siphon the oil that is still contained in the tanker’s hold. Environment Secretary Angelo Reyes and Tan believe the cleanup might take two years if all the needed technology and assistance arrive soon.