Oil Additive

mxer201 · 08-21-2008, 02:38 PM

Anyone ever use Marvel Mystery Oil? I'm considering using it for a hundred miles plus/minus just before an oil change. Any good or bad experiences using it?

z07 · 08-21-2008, 04:37 PM

I don't know about MMO but I will share my own expirience with SeaFoam.

I took the intake off to reseal the intake to China-wall. While it was off I saw it looked nasty inside. So I took some SeaFoam and put it into a spray bottle and outside, holding my breath, I sprayed down the inside of the intake. I let it sit while I removed the gasket from the block and heads. I went outside with a detail brush and the spray bottle to take care of any trouble spots but was happy to see that there were none. All the goo had dripped into the pizza box+kitty litter I had under the suspended intake manifold.

There are many people who add SeaFoam to the oil before a change 1/2 in the tank and 1/2 in the crank case.

mrjohnwayne · 08-22-2008, 10:08 AM

ditto to sea foam.. That is some great stuff.

mudseeker · 08-22-2008, 12:27 PM

after seeing the inside of my intake, i think i might buy some soon.

gmctrucks · 08-22-2008, 08:59 PM

I use Seafoam only in my gas tank but for my oil I use STP.

mikeyc1945 · 10-09-2008, 10:21 PM

I use a pint of Marvel Mystery Oil at each oil change. It keeps varnish down in the engine and enhances the lubricity of the oil. We used it in all of our racing engines.

I also use a pint of STP at each oil change.

HTH

animalsrule · 10-09-2008, 10:38 PM

i was weary of additives but after reading here just might have to try..want my truck to last a long time and it is almost time for oil change

gmctrucks · 10-10-2008, 02:13 AM

I just added Seafoam to the extra SUV we have I poured the stuff down the vacuum booster hose it smoked like if I was smoking some meat but it sure made the gas response feel better I love the stuff I wish I could drink it to run better.

08-21-2008, 02:38 PM	#1
mxer201 Full Member Join Date: Feb 2007 Posts: 42	Oil Additive Anyone ever use Marvel Mystery Oil? I'm considering using it for a hundred miles plus/minus just before an oil change. Any good or bad experiences using it?

08-22-2008, 10:08 AM	#3
mrjohnwayne Senior Moderator Join Date: Apr 2005 Location: Texas Posts: 3,722	ditto to sea foam.. That is some great stuff. __________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4

08-22-2008, 12:27 PM	#4
mudseeker Senior Moderator Join Date: Feb 2006 Location: michigan Posts: 6,373	after seeing the inside of my intake, i think i might buy some soon. __________________ i'd rather be hunting

10-09-2008, 10:21 PM	#6
mikeyc1945 Junior Member Join Date: Oct 2008 Location: Texas Hill Country Posts: 6	I use a pint of Marvel Mystery Oil at each oil change. It keeps varnish down in the engine and enhances the lubricity of the oil. We used it in all of our racing engines. I also use a pint of STP at each oil change. HTH __________________ ----------------------------- "No matter where you go, there you are.", Buckaroo Bonzai

10-09-2008, 10:38 PM	#7
animalsrule Senior Member Join Date: Aug 2008 Location: Kentucky Posts: 307	i was weary of additives but after reading here just might have to try..want my truck to last a long time and it is almost time for oil change __________________ looks are cosmetic.....its whats under the hood that counts

08-21-2008, 04:37 PM	#2
z07 Senior Member Join Date: Feb 2008 Posts: 391	I don't know about MMO but I will share my own expirience with SeaFoam. I took the intake off to reseal the intake to China-wall. While it was off I saw it looked nasty inside. So I took some SeaFoam and put it into a spray bottle and outside, holding my breath, I sprayed down the inside of the intake. I let it sit while I removed the gasket from the block and heads. I went outside with a detail brush and the spray bottle to take care of any trouble spots but was happy to see that there were none. All the goo had dripped into the pizza box+kitty litter I had under the suspended intake manifold. There are many people who add SeaFoam to the oil before a change 1/2 in the tank and 1/2 in the crank case.

08-22-2008, 08:59 PM	#5
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,030	I use Seafoam only in my gas tank but for my oil I use STP.

10-10-2008, 02:13 AM	#8
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,030	I just added Seafoam to the extra SUV we have I poured the stuff down the vacuum booster hose it smoked like if I was smoking some meat but it sure made the gas response feel better I love the stuff I wish I could drink it to run better.

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