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MMO in a small engine?

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Old Feb 29, 2004 | 06:59 PM
  #1  
mustangsvt's Avatar
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MMO in a small engine?

just a thought. i am changing the oil in a 2000 craftsman tractor tomorrow for my neighbor and he hasnt changed oil at all since he got it 4 years ago. Since he will be buying the cheap quaker state dino oil, i was wondering if it would be OK to put a little bit of MMO in it even thought it has no full-flow oil filter?

here are the specs:


B&S 19.5HP I/C Platinum Turbo Twin Cylinder

Holds 1.5 quarts of oil
 
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Old Feb 29, 2004 | 07:04 PM
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I would just do a couple of oil changes with some diesel rated oil. I think MMO is just paint thinner or kerosene in a red and black bottle.
 
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Old Feb 29, 2004 | 07:24 PM
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MMO is not paint thinner or kerosene. I would not use diesel oil in it. Those engines usually use SAE 30 when they don’t have a filter. A few ounces of MMO won’t hurt but I would let it alone.
 
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Old Feb 29, 2004 | 07:34 PM
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Maybe put a little in and tell your neighbor to bring it back in a month or so and change the oil again.
 
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Old Feb 29, 2004 | 08:13 PM
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OK i phoned him he has no problem bringing it back in a month for another change because of the MMO. I will put a little in it because he said it runs like crap (well i guess so).
 
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Old Feb 29, 2004 | 08:19 PM
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Running like crap is probably more related to a lack of changing the plugs and air filter than to oil but it sure won’t hurt.
 
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Old Feb 29, 2004 | 08:23 PM
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lol ill do the oil for now but ill check out the filter and plugs. he is 72 years old and says his back hurts too much to change the oil.
 
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Old Feb 29, 2004 | 09:27 PM
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BlueRanger92, MMO is not just diesel, infact the base is oil of wintergreen. Smells like gum i think. The stuff works great, probably thins the oil a little, but that is not why it works, it works because it is a detergent. It cleaned out my chebbie engine, you should have seen the garbage come out of the engine, plus no more lift tapping on startup.
 
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Old Feb 29, 2004 | 09:33 PM
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78fordman; you misread what I wrote or I miswrote it. I was saying MMO is not kerosene and that I would not use diesel oil in the engine.
 
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Old Feb 29, 2004 | 09:54 PM
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If he lets you do a full tune-up you might want to take the carb off and give it a good cleaning. I had a weed eater that ran like crap then I cleaned the carb and it ran like new. You might want to put a little MMO in the gas also.
 
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Old Mar 1, 2004 | 01:03 AM
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It probably doesn't really need it. But a little bit won't hurt.

MMO is "a complexe mixture of hydrocarbons". The three main ingredients listed on the MSDS are:

Mineral Spirits
Napthenic Hydrocarbons
Chlorinated Hydrocarbons

MSDS
 
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Old Mar 1, 2004 | 08:28 PM
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Why not just run an Auto-Rx treatment
 
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Old Mar 1, 2004 | 10:55 PM
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Run some Diesel motor oil thru it, It will gently clean the motor. They make straight weight deisel oil SAE30
 
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