Hello! I have a 2005 DF250 with right around 400 hours on it. It has been running perfect and i've kept up with the maintenance. The problem I have is that the oil light will come on after about 1 min at idle. It very dim when it starts to come on then it gets a little brighter, It will brighten up faster if I increase the throttle. After about 3 minutes the Check Engine light will also come on in the same fashion. Very dim but progressively brighter. The oil level is perfect and I changed the batteries. No buzzer beeps. Just very dim lights. Any ideas on what is wrong? Thank you in advance!