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MMO Added To Oil ? #3093119
08/12/13 05:02 AM
08/12/13 05:02 AM
Joined: Sep 2010
Posts: 2,097
GA.
ChrisD46 Offline OP
ChrisD46  Offline OP
Joined: Sep 2010
Posts: 2,097
GA.
I inherited a Snapper mower who while the previous owner used M1 synthetic oil - it had been over due for an oil change and the oil was black . I re-filled with a straight 30W conventional oil plus I added 25% MMO (13 oz. of 30W and 3oz. of MMO) . I figure I would run this mixture until the end of the season and then dump it and refill with M1 10W 30 and see how she does ...Anybody else use MMO to clean up a "suspect" small engine ?


2017 Hyundai Sonata 2.4L GDI 4 cylinder
2010 Hyundai Elantra 2.0L 4 cylinder
2007 Kia Sedona 3.8L 6 cylinder
Re: MMO Added To Oil ? [Re: ChrisD46] #3093130
08/12/13 05:20 AM
08/12/13 05:20 AM
Joined: Mar 2005
Posts: 2,688
Elderly County, Florida
GreeCguy Offline
GreeCguy  Offline
Joined: Mar 2005
Posts: 2,688
Elderly County, Florida
Yes, several times, although I never added that much to the crankcase. I would keep a close eye on the oil level to make sure it isn't burning/leaking oil. If it were me, I would do at least one more drain and fill before the end of the season, that way you get a "double wammy" on cleaning and can see how much junk comes out when you drain the current fill.


"Dyslexics are teople poo!!."
Re: MMO Added To Oil ? [Re: ChrisD46] #3093223
08/12/13 07:34 AM
08/12/13 07:34 AM
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
I would run that mmo mix for an HOUR max ( with an ear out for abnormal racket) then refill with HD** oil - not automotive oil (though the small engines in push mowers seem to run on anything forever)

** Rotella 10w30 Triple Protect or T5 for a couple more bucks.


What is 30W oil? You meant SAE 30 GRADE?


2014 Nissan Rogue S CVT, OC#10 47272mi-QSUD10W30+5w20 Toughguard Filter; '17 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter
Re: MMO Added To Oil ? [Re: ChrisD46] #3093249
08/12/13 08:04 AM
08/12/13 08:04 AM
Joined: Mar 2004
Posts: 21,085
Upstate NY
Donald Offline
Donald  Offline
Joined: Mar 2004
Posts: 21,085
Upstate NY
All you needed was a good synthetic oil. If this is a walk behind, with no filter, maybe change the oil when it gets dark. Nothing the filter the crud out of the oil.

Forget the MMO, especially that percentage.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: MMO Added To Oil ? [Re: ChrisD46] #3093325
08/12/13 09:36 AM
08/12/13 09:36 AM
Joined: Sep 2010
Posts: 3,496
VA
TFB1 Offline
TFB1  Offline
Joined: Sep 2010
Posts: 3,496
VA
I ran the freebee, neglected Honda I mounted on my favorite Snapper for a couple cuttings on leftovers as a flush(whatever I had from Advance for the B&S that blew up), then changed to M1 0W-40... That was late in '11, same oil is still in it and hasn't needed any yet, also still fairly clean... Gonna change it soon(well maybe)...

Re: MMO Added To Oil ? [Re: Donald] #3093339
08/12/13 09:44 AM
08/12/13 09:44 AM
Joined: Jul 2013
Posts: 449
Ohio
JethroBodine Offline
JethroBodine  Offline
Joined: Jul 2013
Posts: 449
Ohio
Originally Posted By: Donald
All you needed was a good synthetic oil. If this is a walk behind, with no filter, maybe change the oil when it gets dark. Nothing the filter the crud out of the oil.

Forget the MMO, especially that percentage.


+1 just use Pennzoil Platinum 10w30 and change it 2-3 times in the season.

Last edited by JethroBodine; 08/12/13 09:45 AM.
Re: MMO Added To Oil ? [Re: ChrisD46] #3093344
08/12/13 09:46 AM
08/12/13 09:46 AM
Joined: Apr 2010
Posts: 4,545
Storrs, Connecticut
jeepman3071 Offline
jeepman3071  Offline
Joined: Apr 2010
Posts: 4,545
Storrs, Connecticut
I've opened up quite a few neglected small engines, and I've never seen any with sludge inside. Part of that is due to the fuel dilution of the oil with these carb'd engines.

The MMO won't hurt it one bit, just make sure the oil level is full. Small air cooled engines run fairly hot, and the MMO might burn off quicker. Next change, I'd just throw in some Rotella T6 5w40. It has great cleaning properties and can take the abuse of the fuel dilution and high temps. thumbsup


2000 Jeep Cherokee 4.0L (181k) - Pennzoil 10w30, Napa Gold 1516, Magnefine trans filter
2009 BMW 328i (35k) - Castrol Edge Euro 0w40, MANN HU816X
Re: MMO Added To Oil ? [Re: ChrisD46] #3093572
08/12/13 01:24 PM
08/12/13 01:24 PM
Joined: Jul 2010
Posts: 712
Wenatchee, W.A.
84zmyfavorite Offline
84zmyfavorite  Offline
Joined: Jul 2010
Posts: 712
Wenatchee, W.A.
I have seen metal wear particles, I suspect from bearing(what bearing?)rod bearing degredation before in the bottom crevices of small engines oil sumps.

Re: MMO Added To Oil ? [Re: jeepman3071] #3093725
08/12/13 03:43 PM
08/12/13 03:43 PM
Joined: Sep 2010
Posts: 2,097
GA.
ChrisD46 Offline OP
ChrisD46  Offline OP
Joined: Sep 2010
Posts: 2,097
GA.
The Snapper has a B&S engine , no oil filter .
Yes , I will watch the oil level and keep the OCI short .
Yes , SAE 30 is what I meant .
Thanks for the Rotella T5/T6 recommendations ...I will certainly look into that ASAP!


2017 Hyundai Sonata 2.4L GDI 4 cylinder
2010 Hyundai Elantra 2.0L 4 cylinder
2007 Kia Sedona 3.8L 6 cylinder
Re: MMO Added To Oil ? [Re: ChrisD46] #3094168
08/13/13 05:37 AM
08/13/13 05:37 AM
Joined: Dec 2009
Posts: 5,653
Central IA
Robenstein Offline
Robenstein  Offline
Joined: Dec 2009
Posts: 5,653
Central IA
On my Tecumseh powered Craftsman I bought at a garage sale, I just run Mystik SAE30 semi synthetic HDEO. A few short oil change intervals an I am sure it was probably fine.


2011 Triumph Speedmaster
1986 Chevy Monte Carlo SS
1970 Chevy Nova
2006 Scion TC
Re: MMO Added To Oil ? [Re: 84zmyfavorite] #4805922
07/05/18 01:25 PM
07/05/18 01:25 PM
Joined: Dec 2013
Posts: 277
Virginia
Dufus2 Offline
Dufus2  Offline
Joined: Dec 2013
Posts: 277
Virginia
This is an old post and I run MMO in the gas and oil, my mowers and string trimmer never miss a beat. I use 4-oz per quart of 30w motor oil, and 2 teaspoons per gallon of gas. After using a walk behind mower for a full 2-hours (two tanks of gas to mow my yard) the oil level is fine and a pink tint remains in the oil. People who say not to use MMO are just paranoid about dilution, modern oil is much thinner and I have not had any problem using MMO in my 2-cycle, push mower, riding mower or any vehicle. In fact, MMO added to a differential cleans up the burnt oil as a flush treatment with minimal cost.


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