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Cold Weather Oil Flow & MMO #4619490
12/31/17 09:51 AM
12/31/17 09:51 AM
Joined: Dec 2013
Posts: 277
Virginia
Dufus2 Offline OP
Dufus2  Offline OP
Joined: Dec 2013
Posts: 277
Virginia
What is your opinion of adding Marvels Mystery Oil to improve Cold Oil Flow? The first can I read in the 90s said to use 4 oz per quart to improve oil pump-ability in cold weather. Today, the website says to use 10-25% of sump capacity. I like Marvels oil but a lot of people argue it does nothing good.


ASE Certified in Med/Heavy Truck Service including A9
Heavy Equipment Repair, Fleet Maintenance
Real Cars Rattle and Smoke a Little
Re: Cold Weather Oil Flow & MMO [Re: Dufus2] #4619492
12/31/17 09:54 AM
12/31/17 09:54 AM
Joined: Oct 2014
Posts: 11,857
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,857
Idaho
If you use the incorrect oil viscosity MMO will thin the oil a bit.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Cold Weather Oil Flow & MMO [Re: Dufus2] #4619499
12/31/17 10:01 AM
12/31/17 10:01 AM
Joined: Sep 2013
Posts: 10,457
Indiana
dlundblad Offline
dlundblad  Offline
Joined: Sep 2013
Posts: 10,457
Indiana
I recall reading on the bottle (~3 years ago?) that a 5 quart sump could take 1/2 quart at most when the recommended oil is used so 10% sounds about right. An entire quart could be used, but the oil weight should be stepped up a grade. This is where I don't agree with the 25% assuming they want the recommended grade used. How would 4 quarts of 5w30 and 1 quart of MMO flow as opposed to just 5w20? Good question.

I've seen the stuff do some decent cleaning here with shorter OCI's so I'd say it does something.

Last edited by dlundblad; 12/31/17 10:02 AM.

03 Jeep WJ 4.0 200k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 149k Rotella T5 10w30 Supertech ST3980

Re: Cold Weather Oil Flow & MMO [Re: Dufus2] #4619544
12/31/17 11:02 AM
12/31/17 11:02 AM
Joined: Jun 2016
Posts: 3,003
MN
oil_film_movies Offline
oil_film_movies  Offline
Joined: Jun 2016
Posts: 3,003
MN
People used to put kerosene in their engine oil for very-cold starts, common until about the 1970's when multi-viscosity oils finally got really good to use in the winter.
Its a little risky since visc when HOT drops. Consider your protective KV100 will drop by 10% for 10% MMO or kerosene. Its not quite that bad in practice. You could use a Widman calculator, but just consider worst case is, say, a drop from KV100=9 to KV100=7 for a 10% mix of MMO. Then, you've just dropped 1 whole grade down. I'd safely do maybe 10% in very cold weather. No more.

Re: Cold Weather Oil Flow & MMO [Re: dlundblad] #4619545
12/31/17 11:04 AM
12/31/17 11:04 AM
Joined: Dec 2013
Posts: 277
Virginia
Dufus2 Offline OP
Dufus2  Offline OP
Joined: Dec 2013
Posts: 277
Virginia
Originally Posted By: dlundblad

I've seen the stuff do some decent cleaning here with shorter OCI's so I'd say it does something.

The MSDS shows it has the same naphtha as most penetrating oil products. Its also my understanding it has sulfur as an antiwear additive. In my experience, MMO dissolves gum around the piston rings and loosens up carbon in the valve guides in addition to other areas with limited oil flow. I just added 3-oz per quart due to the very cold weather to prevent battery drain and help with sticktation before my next oil change.. Thanks guys for adding your opinion.


ASE Certified in Med/Heavy Truck Service including A9
Heavy Equipment Repair, Fleet Maintenance
Real Cars Rattle and Smoke a Little
Re: Cold Weather Oil Flow & MMO [Re: Dufus2] #4619552
12/31/17 11:17 AM
12/31/17 11:17 AM
Joined: Mar 2004
Posts: 20,758
Upstate NY
Donald Offline
Donald  Offline
Joined: Mar 2004
Posts: 20,758
Upstate NY
MMO is an OK cleaning additive but a poor lubricant. It may help cold flow at the expense of proper lubrication.

Synthetic oil does better that conventional oil when it cold.

Use synthetic oil as listed in owners manual in temp compensated oil recommendation chart.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Cold Weather Oil Flow & MMO [Re: Dufus2] #4619553
12/31/17 11:17 AM
12/31/17 11:17 AM
Joined: May 2017
Posts: 107
ST Augustine, FL
exShuttlemech Offline
exShuttlemech  Offline
Joined: May 2017
Posts: 107
ST Augustine, FL
I remember from A&P classes at Embry-Riddle back in the '80's, that old piston aircraft engines used to dilute the engine oil with fuel upon shutting down in extremely cold environments.


2010 Rav4 4cyl 131K QSUD 0W20 Baldwin bypass filter
2003 4Runner 4.0L 219K 0W40 M1 Frantz bypass
2007 F150 4.2L 169K 5W30 QSUD
2016 NV2500
2017 RAV4
Re: Cold Weather Oil Flow & MMO [Re: Dufus2] #4619568
12/31/17 11:42 AM
12/31/17 11:42 AM
Joined: Sep 2015
Posts: 3,869
Connecticut
69GTX Offline
69GTX  Offline
Joined: Sep 2015
Posts: 3,869
Connecticut
Rather than use MMO for its "thin" qualities, why not just run a 0w-20/30? It doesn't have much in the way of a detergent/additives package. Good cleaner though since approx half of it are solvents.

old thread on MMO


----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs
Re: Cold Weather Oil Flow & MMO [Re: Dufus2] #4619570
12/31/17 11:43 AM
12/31/17 11:43 AM
Joined: Jun 2002
Posts: 18,229
Elizabethtown, Pa
Al Offline
Al  Offline
Joined: Jun 2002
Posts: 18,229
Elizabethtown, Pa
Welcome to the 70 using MMO. Totally useless product. But hey..it helps the economy so buy it.


Re: Cold Weather Oil Flow & MMO [Re: Al] #4619576
12/31/17 12:01 PM
12/31/17 12:01 PM
Joined: Sep 2003
Posts: 5,773
Waterloo, ON
Bluestream Offline
Bluestream  Offline
Joined: Sep 2003
Posts: 5,773
Waterloo, ON
Originally Posted By: Al
Welcome to the 70 using MMO. Totally useless product. But hey..it helps the economy so buy it.


exactly


2000 VW Beetle 1.8T M5
2000 Ford Explorer 4.0 4X4
1991 BMW 735iL
"A fool and his money are soon parted" - Thomas Tusser
Re: Cold Weather Oil Flow & MMO [Re: Dufus2] #4619577
12/31/17 12:04 PM
12/31/17 12:04 PM
Joined: Oct 2010
Posts: 5,287
Florida
Artem Offline
Artem  Offline
Joined: Oct 2010
Posts: 5,287
Florida
Sooooo.... the OP is worried about cold flow (I'm assuming for engine protection) yet is willing to pour in a "Mystery Oil" in hopes of achieving better protection??? Or just better flow at the expense of protection??

Why not just use a high quality oil for winter? It's been shown they flow just fine at insanely freezing temps, so what's the problem? Why add a snake oil? Is there data to show it helps? Why don't you put a cup of oil outside in the cold next to a cup of the same oil with your mystery snake oil added at the recommended amount and see what flows better in the AM? Wouldn't that tell you more info then a bunch of random idiotic comments of what people did in the 70s, etc? It's 2018 and NOTHING needs to be added to SN spec oil to help it flow at -40F. What utter nonsense.

Be sure to post the results of your backyard testing. I'd love to know the results.


2014 Mazda 3 Hatch 2.0L & 6spd - Idemitsu 0w20 Synthetic @ $0.75 a quart. (thanks Advance Auto Parts for the awesome deal)
Re: Cold Weather Oil Flow & MMO [Re: Dufus2] #4619586
12/31/17 12:13 PM
12/31/17 12:13 PM
Joined: Nov 2011
Posts: 4,857
MTL, CANADA
Rolla07 Offline
Rolla07  Offline
Joined: Nov 2011
Posts: 4,857
MTL, CANADA
In virginia you dont need anything to improve flow. Modern oils are more than capable of handling low temps. No additives are needed today. I use 0w20 full synthetic oil and if its 0 Farenheit or lower just use a block heater. Much better than playing with oil chemistry. Ive had my car 7 years and always parked outside. I installed a block heater only recently and the car has always started without issue in temps down to -22 F. An old UOA I did showed very low wear numbers, thats all I need to see to keep using only a good full syn oil.


2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967

Re: Cold Weather Oil Flow & MMO [Re: Rolla07] #4619600
12/31/17 12:26 PM
12/31/17 12:26 PM
Joined: Nov 2008
Posts: 3,157
Oshawa, Ontario Canada
JC1 Offline
JC1  Offline
Joined: Nov 2008
Posts: 3,157
Oshawa, Ontario Canada
As others have stated, use a good quality synthetic for those cold starts.

Save the MMO for cleaning. I have some MMO left, bought a one gallon jug a few years back at WM.


2015 Grand Caravan SXT Plus 5w-20 PPPP/Fram Ultra Filter
1997 Honda Civic CX 5w-30 Shell Conventional/Fram Ultra Filter
Re: Cold Weather Oil Flow & MMO [Re: Donald] #4619616
12/31/17 12:47 PM
12/31/17 12:47 PM
Joined: Sep 2015
Posts: 5,868
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,868
Kalifornia Kollective
Originally Posted By: Donald
MMO is an OK cleaning additive but a poor lubricant. It may help cold flow at the expense of proper lubrication.

Synthetic oil does better that conventional oil when it cold.

Use synthetic oil as listed in owners manual in temp compensated oil recommendation chart.


Not sure I agree ... I have been using MMO as rust preventative and slow-soak penetrating oil for about 50 years. Seems to lubricate very well. I have it trigger pump oil cans around the place. Use it on rusty hinges and the like, and they stay oily a long time - turn smooth, etc. Seems to lube well for a thin oil smile

It'll definitely thin out heavier motor oils, if you need to for winter. And is a better lube, by far, than Kerosene ... Just depends on what's in the sump right now ... Tossing a quart or two of MMO into a fresh'ish batch of 20W-50 or SAE 40 in a tractor will help it start and run better out in the fields in winter cold. Of course they are not running anywhere 200*F (+) like many modern engines ... I think it all depends on what your Op Temp is and if you can even get it there ...

Last edited by BrocLuno; 12/31/17 12:52 PM.

Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Cold Weather Oil Flow & MMO [Re: Dufus2] #4619628
12/31/17 01:04 PM
12/31/17 01:04 PM
Joined: May 2014
Posts: 3,667
Columbus,Nebraska
Yah-Tah-Hey Offline
Yah-Tah-Hey  Offline
Joined: May 2014
Posts: 3,667
Columbus,Nebraska
Use a synthetic 0W-20 oil. No sense throwing your $$ down a rathole.

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