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Oil Consumption Help on Dodge 5.9 #4624857
01/05/18 11:49 AM
01/05/18 11:49 AM
Joined: Sep 2015
Posts: 884
California
mbacfp Offline OP
mbacfp  Offline OP
Joined: Sep 2015
Posts: 884
California
My 2003 Dodge Durango 5.9 oil consumption has me a little concerned it might have a Plenum Gasket issue.
Using Pennzoil Platinum 10w-30, topping off with Valvoline Maxlife Syn Blend 10w-30.

Oil Changed 5/13/17 91,317 miles
Currently 1/5/18 94,450 miles

So, in 3,133 miles I have added about 1.50 qts of make up oil (from my memory). Is this excessive? I have no leaks, no smoke at startup, no rough idling or on acceleration. Any advice or help would be appreciated. Truck runs great.


2014 F-550 PSD..........M1 Delvac ESP 5w-40 + OEM
2018 Dodge Charger SRT Hellcat
2012 Toyota Sienna LTD 3.5L V6
2003 Dodge Durango R/T 4x4 5.9L V8
Re: Oil Consumption Help on Dodge 5.9 [Re: mbacfp] #4624867
01/05/18 11:55 AM
01/05/18 11:55 AM
Joined: Jul 2008
Posts: 288
Bucks, PA
zfasts03 Offline
zfasts03  Offline
Joined: Jul 2008
Posts: 288
Bucks, PA
My 97 Ram with 5.9 uses almost the same, especially with 5w-30 synthetic. About a quart per 2000 miles.

With 10w-30 conventional or blend uses about a quart per 3000 miles.

I have 78,000 on my engine and have done the Hughes Intake manifold set.
I also replaced valve cover gaskets w/ Felpro.

I am more concerned with frame and body rust as this will send it to the junkyard. Engine runs great.


03 Corvette Z06
-Amsoil 5w-30 SS
07 Honda Accord 2.4L
-Amsoil 5w-20 SS
16 Suburban 5.3L
-M1 0w-20, XG10575
18 4Runner TRD Off Road
- Amsoil 0w-30 SS, TRD filter
Re: Oil Consumption Help on Dodge 5.9 [Re: mbacfp] #4624876
01/05/18 12:02 PM
01/05/18 12:02 PM
Joined: Jan 2008
Posts: 521
Richmond, BC, Canada
mechjames Offline
mechjames  Offline
Joined: Jan 2008
Posts: 521
Richmond, BC, Canada
It might be start of the plenum gasket. Take the air intake off the throttle body and see if you can find oil in there.

Also try changing the PCV valve with a Mopar OEM valve. I haven't found an aftermarket one that is quiet, they all buzz, and the OEM one is quiet. It could be consuming there.

I have a friend with a 98 Grand Cherokee with a blown plenum gasket, he's burning 1qt every 200km. And you can tell as it blows blue smoke and has a missfire sometimes.
But if you got none of that yet, try the PCV valve first. Be careful pulling it out, the grommet hardens up on the valve cover and gets brittle, and the dealer is the only place to get it.


86 Mustang 5.0L 170km - Amsoil XL 5w30 / Baldwin B2-HPG
14 Ram 1500 5.7 - Amsoil XL 5w20 / Baldwin B7443
98 Jeep ZJ 5.9 - Amsoil OE 10w30 / Baldwin B34
Re: Oil Consumption Help on Dodge 5.9 [Re: mbacfp] #4624948
01/05/18 01:18 PM
01/05/18 01:18 PM
Joined: Dec 2006
Posts: 4,220
Port Orange, Florida
Panzerman Offline
Panzerman  Offline
Joined: Dec 2006
Posts: 4,220
Port Orange, Florida
I had a Dodge 5.9 for a long time and it's picky on what oil it likes. I know that sounds crazy but it hated Havoline and burn oil like crazy. Castrol never use any.
I changed oil every 3000 miles back then. I d change the PVC and try Castrol or Pennzoil Conventional 10w30 and see if that works.



2006 Dodge Ram 2500 Hemi 4x4
2016 Dodge Challenger Scat Pack
Re: Oil Consumption Help on Dodge 5.9 [Re: mbacfp] #4624960
01/05/18 01:34 PM
01/05/18 01:34 PM
Joined: Sep 2015
Posts: 884
California
mbacfp Offline OP
mbacfp  Offline OP
Joined: Sep 2015
Posts: 884
California
Thanks so much everyone. I just stocked up on Havoline 10w-30 Syn clearance sale...might have to switch to conventional and see what happens. I changed the PCV value with Mopar OEM. Will keep an eye on next OCI and report back with more accurate account. Thanks again to all.


2014 F-550 PSD..........M1 Delvac ESP 5w-40 + OEM
2018 Dodge Charger SRT Hellcat
2012 Toyota Sienna LTD 3.5L V6
2003 Dodge Durango R/T 4x4 5.9L V8
Re: Oil Consumption Help on Dodge 5.9 [Re: mbacfp] #4625164
01/05/18 04:40 PM
01/05/18 04:40 PM
Joined: Mar 2012
Posts: 804
BerksCounty/Pa.
thorromig Offline
thorromig  Offline
Joined: Mar 2012
Posts: 804
BerksCounty/Pa.
Different motor/same motor Family in mine. My Ram in sig. never consumes oil/knocking on wood. I do know that it prefers 10W30 over 5W30 just by the sound & feel -- sorry if that sounds strange!! Try running your new PCV with a conventional SN rated 10W30 & see what results come from it. Good luck!!!


00 Dodge Ram 5.2L 4x4 Edge 10W30 FU (91K)
08 Acura TL Type S 3.5L PUPP 5W20 FU (101K)
17 Jetta TSI SE 1.4L Turbo - Edge 0W40 FU (Hers) (4K)
Re: Oil Consumption Help on Dodge 5.9 [Re: mbacfp] #4625245
01/05/18 05:55 PM
01/05/18 05:55 PM
Joined: Sep 2015
Posts: 884
California
mbacfp Offline OP
mbacfp  Offline OP
Joined: Sep 2015
Posts: 884
California
Yes, running 10w-30. On another forum, someone said a Dodge Tech said Plenum Gasket problems were on earlier model and fixed by 2003. Anyone know if that is true? Just curious. Thanks.


2014 F-550 PSD..........M1 Delvac ESP 5w-40 + OEM
2018 Dodge Charger SRT Hellcat
2012 Toyota Sienna LTD 3.5L V6
2003 Dodge Durango R/T 4x4 5.9L V8

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