Well, After blowing my turbo in Shelbyville last summer,i had to start it several times to get it on and off the trailer. It must have dumped a lot of oil into the innercooler. after installing the new turbo,we started it up. after running for a short time it warmed up enough to start sucking the oil out of the innercooler. it started running off the oil in the innercooler. the RPM's started climbing ,we shut the key off , it didn't help. I may hold the world record for the highest RPM's on a Duramax. they say it was 6-7000 RPM's when it came apart. that started a LARGE headache,and a costly headache. Thats where the term RUN-A-WAY comes from .