12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Additives for blowby?

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Old Apr 19, 2010 | 12:07 PM
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Default 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
 
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Old Apr 19, 2010 | 12:27 PM
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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
 
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Old Apr 19, 2010 | 12:59 PM
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Worn rings allow combustion pressure into the crankcase - that's "blowby."
 
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Old Apr 19, 2010 | 01:15 PM
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Originally Posted by NadirPoint
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.
 
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Old Apr 19, 2010 | 01:15 PM
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its time for an overhual
 
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Old Apr 19, 2010 | 01:40 PM
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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?
 
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Old Apr 19, 2010 | 05:05 PM
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Originally Posted by 85_305
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.
 
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Old Apr 19, 2010 | 05:07 PM
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So the blow by is soooo bad u can fog out an intersetion?! I wanna see a vid of this!
 
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Old Apr 19, 2010 | 05:32 PM
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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?
 
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Old Apr 19, 2010 | 05:37 PM
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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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