2006 peterbilt 379

This is something you should film with phone and post up. I know of no big diesel that doesn’t have a little bit of smoke or steam coming out of the blow by tube. All diesels have blow by and that’s the reason for the vent tube hangin down below pan. There is such thing as excessive blow by. Usually it will be puffing like a freight train if your rings are shot. Let’s see a video

 

This is a little excessive but I’ll bet after 1 million miles, this motor could still go another 100k

 

My truck is worse then that one and I only got little over 500,000 miles.

The engine is tuned and runs very strong (60 psi boost) and burns about a gallon of oil every 5,000 miles. I don't like that it hazes so much out the blow by but I guess it's common on the acert. I think mines excessive but I keep running it.

 

What brand of oil are you using ? On my 5Ek, I was starting to get a little more blown by than usual.

A local oil distributor advised me to change the oil was using(Chevron Delo 15-40).

I went to there local distributor synthetic blend which is comparable to Conoco/Phillips... at half the price of the Mega oil companies.

Guess what...... the blowby I had before, all went away.

Something to think about. The newer oils are more made for the newer emission engines. Find a local oil distributor and see what they have to offer.

 

Oil can make difference. I agree with this

 

OP

How. Many miles on this motor?

ANY mantainence records from previous owner?