cumminschevy
Cummins Crazy
ok new on the site but not so much to the diesel world. my names brett. i have a 90 dodge diesel auot trans reg cab 2wd dually with about 240k . my problem is having a ton of pure black oil in my coolant. oil level is a little low. thought maybe trans fluid but thats not the case. the truck does not have anything extreme done to it besides the pump being turned up a little and an air intake. im thinking head gasket but have heard it may be a cracked block. can somone point me in the right direction please!