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-   -   Additives for blowby? (https://www.dieselbombers.com/12-valve-2nd-gen-dodge-cummins-94-98/49061-additives-blowby.html)

85_305 04-19-2010 12:07 PM

Additives for blowby?
 
Can I use some lucas oil treatment or a can of Restore to help with the blowby from my truck? It's not terrible but it will haze out an intersection occasionally (turned up pump proly doesn't help either)?

Thanks all

Matt

tltruckparts 04-19-2010 12:27 PM

no. blowby is caused by an excessively worn engine, its not a lubrication problem or anything. its the fact that your piston rings are so worn theyre letting oil past them

NadirPoint 04-19-2010 12:59 PM

Worn rings allow combustion pressure into the crankcase - that's "blowby."

94 12valve 04-19-2010 01:15 PM


Originally Posted by NadirPoint (Post 540923)
Worn rings allow combustion pressure into the crankcase - that's "blowby."

thats right ... the combustion pressure will pressurise the crankcase, and then the breather tube will vent the extra pressure.

12vcummins96 04-19-2010 01:15 PM

its time for an overhual

85_305 04-19-2010 01:40 PM

But wouldn't something like Restore (which i've used in high mileage gassers and it worked GREAT as far as oil consumption, mileage and poor idle etc), or Lucas Oil which is really thick, work to stop a large portion of the blowby?

daveO 04-19-2010 05:05 PM


Originally Posted by 85_305 (Post 540966)
But wouldn't something like Restore (which i've used in high mileage gassers and it worked GREAT as far as oil consumption, mileage and poor idle etc), or Lucas Oil which is really thick, work to stop a large portion of the blowby?

Worth a shot, I'd say.

Red_Rattler 04-19-2010 05:07 PM

So the blow by is soooo bad u can fog out an intersetion?! :td: I wanna see a vid of this!

85_305 04-19-2010 05:32 PM

Alright mr. Rattler no its not that bad but it CAN haze the street lightly at a stop sign.

Should I try restore, to restore the walls and rings etc, or try a thicker oil enhancer like lucas? Anybody with any luck?

tltruckparts 04-19-2010 05:37 PM

with all the problems your having this motor do what i recommended in the other thread. just get a used and part yours out. itll cost you less and you have any of these problems


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