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Old 08-18-2012, 12:10 PM   #1
Charlton
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Member#: 43038
Join Date: Sep 2003
Location: Franklin, Tennessee U.S.
Vehicle:
2002 Forester S
Black

Default Marvel Mystery Oil

Anyone adding a few ounces on each fill up? How about a little to the engine? I always get good mileage when I add a few ounces to my motor. Anyone else?
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Old 08-18-2012, 01:48 PM   #2
cmiovino
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Join Date: Dec 2006
Chapter/Region: MAIC
Location: Pittsburgh, PA
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2004 WRX Premium
PSM

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I actually had to google this stuff:
http://marvelmysteryoil.com/

Hmmmm. Usually this snake oil doesn't work. How much is this stuff? Have any documented fillups?
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Old 08-18-2012, 08:17 PM   #3
Charlton
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Black

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Quote:
Originally Posted by cmiovino
I actually had to google this stuff:
http://marvelmysteryoil.com/

Hmmmm. Usually this snake oil doesn't work. How much is this stuff? Have any documented fillups?
I usually don't buy additives except this one. I add 4 ounces with each fill up. MMO is pretty cheap.
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Old 08-18-2012, 11:01 PM   #4
Bababou
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Join Date: Apr 2011
Chapter/Region: SWIC
Location: Glendale, Az
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2010 2.5i Impreza
Newport blue

Default

I have used it in older cars and had luck bumping MPG and even got rid of a bit of blue smoke on a 91 celica that was on its last leg. Havent tried it on the Impreza yet. What kind of MPG have you picked up useing this.
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Old 08-18-2012, 11:17 PM   #5
Charlton
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Location: Franklin, Tennessee U.S.
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2002 Forester S
Black

Default

Quote:
Originally Posted by Bababou View Post
I have used it in older cars and had luck bumping MPG and even got rid of a bit of blue smoke on a 91 celica that was on its last leg. Havent tried it on the Impreza yet. What kind of MPG have you picked up useing this.
Maybe an extra mile or two per gallon.

I used it in a 98 Legacy GT I had once and it does improve fuel mileage slightly and keeps the fuel system clean.

Its also good to add to oil. I would usually put 4 quarts of oil in my Subaru and half a quart of MMO. Its been around forever.
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Old 08-21-2012, 04:14 PM   #6
DeanSI
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Join Date: Aug 2012
Default MMO Top Lube

MMO mixed in the fuel was once used as the replacement in unleaded gas for lead. Lead in old gasoline helped lube the valves. Used it in the harley years ago. Also a great bicycle chain oil.
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Old 08-21-2012, 04:36 PM   #7
cal_look_zero
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Join Date: Sep 2011
Chapter/Region: NWIC
Location: Grass Pants, OR
Vehicle:
1997 Outback Sport
383hp/345tq

Default

MMO is GREAT on hydro lifter cars, especially the old EA82 and early EJ18/22s.

I run a smidge of it in the bikes and the truck to prevent fuel gumming up anything while they sit.
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Old 08-21-2012, 09:39 PM   #8
Ralph47
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Location: Southern NH
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2009 Impreza 2.5i
Dark Grey

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I have always run Seafoam in my fuel, it helps my Imp run smoother and bumps the MPG up one or two. Now at ~$10 a can (pint per fill up) it is far from worth it mileage wise but it helps keep the motor clean.

I may try the MMO as it is a lot cheaper and has a great reputation.
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Old 08-21-2012, 11:35 PM   #9
geronimo81
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Location: San Ramon
Vehicle:
1996 Turbo Outback
9psi on 91 No EM

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MMOFTW. I have used it forever and it does help things run smoothly. You really don't need to use very much either. Also makes a great oil for air tools.

Is it just me or does it smell good too?
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Old 08-22-2012, 12:49 AM   #10
Ioku
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Location: OR
Vehicle:
95 Impreza coupe

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I love the smell of MMO, it has a sort of spearmint smell too it
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Old 08-22-2012, 01:08 AM   #11
Uncle Scotty
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we have an Uncle

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a bit of low sulfur mineral spirits in the gas with a dab of plain dexron atf works great too

cheap
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Old 08-22-2012, 08:52 AM   #12
cmiovino
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Quote:
Originally Posted by Uncle Scotty View Post
a bit of low sulfur mineral spirits in the gas with a dab of plain dexron atf works great too

cheap
FYI, no one try this

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Old 08-22-2012, 10:27 AM   #13
silver2004impreza
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Chapter/Region: MAIC
Location: Front Royal
Vehicle:
2004 Impreza 2.5TS
2004 Outback sedan H6

Default

If anyone is interested, here's a recipe for making Sea Foam yourself. You can buy it for $10 a pint, or you can make your own for $10 a gallon (based upon local prices)

Seafoam Homebrew
1 part Coleman Camp Fuel
1 part hydraulic fluid (such as what you'd use in a floor jack)
1/4 part Isopropyl (rubbing) alcohol
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Old 08-22-2012, 11:12 AM   #14
Uncle Scotty
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OK Houston
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Quote:
Originally Posted by cmiovino View Post
FYI, no one try this

i ran that for years with xylene and toluene as octane booster, f00

it only takes a couple ounces of each mixed up in a 3:1 ratio

it DOES work....the mineral spirits is the solvent and the atf is the upper cylinder lube


MMO is nothing special, it just costs a lot more and sea foam used to cost $2.99/can....NOW....**** that

I'm not an idiot and i dont post out my ass
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Old 08-22-2012, 04:11 PM   #15
NH8991
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Chapter/Region: E. Canada
Location: Montreal, QC
Vehicle:
2009 Impreza 2.5i
Mk7 Golf R incoming

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Quote:
Originally Posted by Bababou View Post
I have used it in older cars and had luck bumping MPG and even got rid of a bit of blue smoke on a 91 celica that was on its last leg. Havent tried it on the Impreza yet. What kind of MPG have you picked up useing this.
I haven't specifically used MMO, but I did try Extralube ZX1 a while back. I never noticed any difference on my own cars, but they were always maintained religously and generally in very good condition.
However, I did get my mom's car to pass the UK emissions test after dumping half a bottle in the engine (the contents, not the actual bottle ). Maybe this stuff does have some merit in vehicles with more wear & tear.
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Old 08-25-2012, 02:45 PM   #16
97ej22e
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Location: Sanford, Maine
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1999 Impreza OBS
Green

Default

Seafoam is great, my car seems to have more get up and go now that I cleaned it out.
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