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HM oil to reduce oil consumption #4654823
02/03/18 12:08 PM
02/03/18 12:08 PM
Joined: Nov 2004
Posts: 1,854
SD
zrxkawboy Offline OP
zrxkawboy  Offline OP
Joined: Nov 2004
Posts: 1,854
SD
I'd like to hear experiences about HM oil reducing consumption. It seems that most discussions are about reducing leaks.

The vehicle in question is an '05 Chrysler T&C with the infamous oil-burning 3.8. Bought it with 70k and it now has 146k. It has always burned about a quart every 1500. This has been pretty consistent since we've owned it. Conklin Convoy 5W30, Valvoline Maxlife 5W30, Mobil 1 HM 5W30, and Mobil 1 0W40 have all been used and consumption has been similar with all (each has been run for more than 1 OCI, and yes, more than 1 means 2 or more wink ).

The PCV valve and hose have been replaced with OEM, with no improvement.

I'm not expecting a cure, but any improvement would be welcome. I'm thinking of trying Pennzoil HM or Castrol HM, leaning toward the Castrol as they claim it's less harmful to the cat, which I've already replaced once. Thanks in advance for any input.

Last edited by zrxkawboy; 02/03/18 12:10 PM.

"Think of all the Ford owners who will someday want an automobile." John Dodge

Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4654826
02/03/18 12:12 PM
02/03/18 12:12 PM
Joined: Oct 2014
Posts: 12,573
Idaho
CT8 Online content
CT8  Online Content
Joined: Oct 2014
Posts: 12,573
Idaho
It probably would depend on the cause of the problem.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4654827
02/03/18 12:13 PM
02/03/18 12:13 PM
Joined: Oct 2002
Posts: 36,608
Great Lakes
Quattro Pete Offline
Quattro Pete  Offline
Joined: Oct 2002
Posts: 36,608
Great Lakes
I've been running Castrol Edge HM 10w-40 in my 530i for the past 12K miles or so. So far, I've noticed no improvement in either leak reduction or consumption.


'02 530i (Edge 0W-40)
'15 Q5 3.0T (Edge 5W-40)
'18 Charger SRT (PUP 0W-40 SRT)
Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4654830
02/03/18 12:15 PM
02/03/18 12:15 PM
Joined: Oct 2015
Posts: 2,797
Balearic Islands , Spain
FordCapriDriver Offline
FordCapriDriver  Offline
Joined: Oct 2015
Posts: 2,797
Balearic Islands , Spain
Band aid fix.


1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO.

1988 Ford Escort Mk4 Xr3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50.

Finnish expat in Spain.
Re: HM oil to reduce oil consumption [Re: FordCapriDriver] #4654833
02/03/18 12:19 PM
02/03/18 12:19 PM
Joined: Nov 2004
Posts: 1,854
SD
zrxkawboy Offline OP
zrxkawboy  Offline OP
Joined: Nov 2004
Posts: 1,854
SD
Originally Posted By: FordCapriDriver
Band aid fix.


Agreed. Like I said, any improvement would be welcome. I'm not gonna rebuild the engine in a 13yo minivan.


"Think of all the Ford owners who will someday want an automobile." John Dodge

Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4654836
02/03/18 12:26 PM
02/03/18 12:26 PM
Joined: Feb 2014
Posts: 1,786
Texas
Dallas69 Offline
Dallas69  Offline
Joined: Feb 2014
Posts: 1,786
Texas
Go up to 10-40 Maxlife
Have you tried LiquaMoly MOS?
If either of these don't work then I think u are out of luck.


2009 Galant-ultra oil and filter
1987 Ford F-150 302
Smittys 5-30
Motorcraft filter
Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4654850
02/03/18 12:41 PM
02/03/18 12:41 PM
Joined: Dec 2017
Posts: 2,983
SE British Columbia, Canada
Snagglefoot Offline
Snagglefoot  Offline
Joined: Dec 2017
Posts: 2,983
SE British Columbia, Canada
Quaker State Defy worked pretty well but it depends on how bad the seals are.


If you want the job done right......do it yourself.
Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4654857
02/03/18 12:48 PM
02/03/18 12:48 PM
Joined: Feb 2015
Posts: 506
NC
Matagonka Offline
Matagonka  Offline
Joined: Feb 2015
Posts: 506
NC
Castrol tends to be a bit thicker. Run a 10w40 HM.

Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4654875
02/03/18 01:02 PM
02/03/18 01:02 PM
Joined: Nov 2004
Posts: 1,854
SD
zrxkawboy Offline OP
zrxkawboy  Offline OP
Joined: Nov 2004
Posts: 1,854
SD
Thanks for the replies. I'm not going to a 10W40. Whatever I run, I want to be able to run year-round. We get many mornings well below 0 here. On New Year's morning, actual temp was -29F! So glad I had the day off work and could stay inside. I do park in a detached garage, but it's uninsulated/unheated, so start-up temps are only a little better than outside temp.

I tried the 0W40 to see what a 40 wt would do, and saw no difference.

Some have mentioned the cause of the consumption, and yes, that is definitely relevant. Unfortunately, I just can't say. After much reading over the years, the problem just seems to plague many of these 3.8 engines. Various explanations are floating around the internet: faulty ring design, oil rings installed upside-down on the assy line, etc. Honestly, I just don't know, but something along those lines seems to make sense, as the consumption has remained constant from 70k to 146k. I wish I knew if the problem had existed since new.

The van runs great, and we like it, so plan to keep it for a couple more years.


"Think of all the Ford owners who will someday want an automobile." John Dodge

Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4654904
02/03/18 01:28 PM
02/03/18 01:28 PM
Joined: Apr 2016
Posts: 1,198
Campbellsville, KY
Alex_V Offline
Alex_V  Offline
Joined: Apr 2016
Posts: 1,198
Campbellsville, KY
My in-laws have a 2010 Caravan (237K now) that I've put multiple different kinds of HM oil in, with little effect on consumption. Maxlife red bottle 5w20, 5w30, full syn Maxlife 10w30, Castrol 0w40 - it burns a quart every 1,000-1,200 miles and they refuse to keep it topped up. When I'm the one topping it off I put whatever I need to get rid of in it, 5w20 to 10w40. When I initially put VML in it (190K?) consumption seemed to slow some, but it slowly started using more again so I think the 3.8's particular flaw that causes consumption is difficult to reverse or mitigate very well.


To quote a friend, "Synthetics, man."

'85 GMC C3500, 454, 132K
'82 Mercedes 300CD, OM617 turbo, 173K (totaled 2018, in rehab)
'85 Mercedes 300TD, OM617 turbo, 217K (wife's)
'67 Suburban, 350, 331K
Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4654921
02/03/18 01:43 PM
02/03/18 01:43 PM
Joined: Mar 2011
Posts: 2,198
Indiana
Indydriver Offline
Indydriver  Offline
Joined: Mar 2011
Posts: 2,198
Indiana
First fill of M1HM cut the oil consumption in half in my Ď07 Tahoe 5.3. It was very noticeable vs AFE and standard 5W-30 syn loads. Iím interested to see if subsequent consecutive fills cuts it even further.


2014 Camaro 2SS/RS LS3 Vert 14,000 M1
2012 Sienna 79,000 M1
2007 Tahoe 140,000 PP

Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4655004
02/03/18 03:16 PM
02/03/18 03:16 PM
Joined: Oct 2008
Posts: 386
Long Island,nassau county NY
nickaluch Offline
nickaluch  Offline
Joined: Oct 2008
Posts: 386
Long Island,nassau county NY
Mobil 1 hm 10/40 definitely helped in my Geo prism


2007 G6 beater.2012 E450 box truck. 2018 Chevy Traverse.2017 E450 box truck.2017 Chevy 3500 extend cargo van.
Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4655051
02/03/18 04:12 PM
02/03/18 04:12 PM
Joined: Oct 2005
Posts: 1,676
South Dakota
otis24 Offline
otis24  Offline
Joined: Oct 2005
Posts: 1,676
South Dakota
My first Grand Caravan, 2005 with a 3.8, is what brought me here. I purchased the van new. It woold use about 3/4ths of a quart in 1200 miles. In the case of this vehicle, simply switching to Pennzoil Platinum dropped consumption to about a half quart in 2k miles

My second van, a 2009 T&C with 3.8, was purchased used with 64k miles. This van used one quart per thosand miles l8ke clock work. At 500 miles, it was down a half quart. At 1000 miles, it was down one quart. Nothing helped. Not Mobil 1 full synthetic nor a Pennzoil Platinum full synthetic. Finally, I switched to Pennzoil Platinum High Mileage. Consumption was reduced dramatically.


1991 Chevrolet K1500 (4.3, 4x4, 86k miles)

2016 Dodge Grand Caravan
(3.6 V6) 46500 miles
Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4655056
02/03/18 04:17 PM
02/03/18 04:17 PM
Joined: Oct 2005
Posts: 1,676
South Dakota
otis24 Offline
otis24  Offline
Joined: Oct 2005
Posts: 1,676
South Dakota
Mine was purchased new and yes, consumption was an issue from the get go.


1991 Chevrolet K1500 (4.3, 4x4, 86k miles)

2016 Dodge Grand Caravan
(3.6 V6) 46500 miles
Re: HM oil to reduce oil consumption [Re: zrxkawboy] #4655066
02/03/18 04:28 PM
02/03/18 04:28 PM
Joined: Nov 2008
Posts: 3,277
Oshawa, Ontario Canada
JC1 Offline
JC1  Offline
Joined: Nov 2008
Posts: 3,277
Oshawa, Ontario Canada
Do the valve cover gaskets need replacing? I would check for leaks there.


2015 Grand Caravan SXT Plus 5w-20 PPPP/Fram Ultra Filter
1997 Honda Civic CX 5w-30 Shell Conventional/Fram Ultra Filter
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