i posted a few days ago tha my 2005- 250 stroker was overflowing antifreeze
and the smell was coming in through the vents when you stop. one dealer said it was the head gasket , or the egr. but after i took it back to the dealer where i bought it , i found out that i was the oil cooler bad. it was letting oil get into the coolant system , and was causing the coolant resivour to overflow. they replaced the oil cooler, flushed the system, and replaced the coolant resivour. so thanks to the diesel mechanic@ edwards auto sales, iin walhalla, s.c. my truck is running smooth again.