Been awhile since I've been on here. I have an 08 quad cab 6.4 and my oil temp has been getting above 220 alot lately and almost to 230. My coolant temp stays around 196. I have never gotten a code about my oil cooler temp and the wrench light has never came on. Is there any chance it could be just a thermostat? If it is bad I already am planning on changing it this weekend. Thanks..