I am starting to notice my oil temp constantly running about 20 deg over coolant temp. I am thinking about doing the whole egr delete kit. will that help my coolant and oil temp read lower. I am also having a rough idle and rough running until engine warms up. that started happening after I changed the oil. dealer wants $160 to do a power balance test, is that high or just me. I also want to flush out the coolant system. I do that, is there more to do than just drain and fill back up.