MMO and Synthetic Oil

[PatrickKr]

Hey Guys,

I hadn't heard of MMO until I came across this website. I picked some up at the store I figure 5 bucks whatever. I have a question though, do I add this strait in with my new synthetic oil or is this something that should be added to old oil and drained say 1000 miles later? I don't want to waste my Synthetic oil.

I originally wanted to buy Kreen but I cant get it shipped to CA

 

[Quest]

first off, welcome.

Question for you: what are you trying to achieve here? If it's cleaning, consider using straight yet properly formulated oil such as Pennzoil Ultra, etc.

Don't play scientist if I were you (I maintain list of vehicles for my small pool of clientele, and accumulated mileage is over 1million kms; never have the need to add any "so-called" off the shelf cleaners (MMO) all these years.

If you suspect you have mild oil burning issue, consider replacing your PCV valve first, then proceed to using motor oil with stronger cleaning ability.

Q.

lastly: for mitsu engines with sufficiently high mileage and starts getting morning sickness (puff of blue smoke 1st thing in the morning), consider getting all your valve guide seals replaced.

 

[PatrickKr]

Thank you!

I am not a chemist or scientist and don't want to act like one lol.
I was told by my dealer that I had a significant amount of engine smudge due to lack of care by the previous owner most likely. I have since changed to full synthetic of the correct weight 5-20 but have seen no difference in the last 10k miles.

I purchased the bottle but wasnt sure if it was ok to use that is why I posted here first. The car is a 2009 Camry with 72k miles. I have not tried any fuel additives as I am apprehensive about them as well but it seems that something is off even though the car is not throwing any codes.

They already replaced the motor and transmission mounts but nothing has helped.

 

[Loobed]

Don't add MMO to synthetic oil. Use it only as a last resort if you are having problems with your engine that might be sludge related. Suppose you are burning oil in 1 cylinder and you thing it might be the oil control ring, or you have a lifter that ticks. You could add MMO to see if it would fix the problem before tearing the engine apart.

 

[HTSS_TR]

Add up to 1 qt MMO about 1k miles before oil change.

 

[crazyoildude]

bring your car to a qualified engine shop and see what they say..most are honest as for dealers i have seen most are NOT

 

[ahoier]

Though MMO _is_ compatible with full synthetic oil......I don't support the use in synthetic oils

Especially, not since MMO themselves recommend a mere 3,000 mile OCI, when the MMO is used.....

Something to do with the detergents that MMO contains, you basically don't want it in the engine longer than 3000 miles......


Now, something I _have_ heard, and could partially support, would be adding the MMO at say, the last 3000 miles of an "extended" full synthetic oil change

So, say you run 5k OCIs, add the MMO at 2000 miles........since they recommend dumping the oil in 3k, you'll be right at 5k

BUT, on the other hand, I've also heard some people say that they believe the MMO does "better" cleaning when used in "fresh" motor oil.....

Soooo......you could perhaps use the MMO as the last 3000 miles of an extended oil change, then when you change the oil, add fresh MMO with your "new" motor oil.....just don't OVER dose the engine with it....MMO themselves states 1 quart of MMO in a 5 quart engine.....but I like to shy down to a pint.....and yes, I've seen seen good results (extremely dark oil drains at 3k......).


But yea, you're best bet, is to just wait for your next OCI, get some cheap SuperTech, QS, or PYB, and add the MMO with the cheap dino oil

 

[ARB1977]

I added MMO to Mobil One AFE 0W30 once during the last three months of a oil change pretty much burn the whole qrt of MMO. Made the oil too thin, LOL. Depending how bad the sludge is do a couple short change intervals with synthetic and as time moves on each time it should get better.

 

[demarpaint]

Originally Posted By: ahoier
Though MMO _is_ compatible with full synthetic oil......I don't support the use in synthetic oils

Especially, not since MMO themselves recommend a mere 3,000 mile OCI, when the MMO is used.....

Something to do with the detergents that MMO contains, you basically don't want it in the engine longer than 3000 miles......


Now, something I _have_ heard, and could partially support, would be adding the MMO at say, the last 3000 miles of an "extended" full synthetic oil change

So, say you run 5k OCIs, add the MMO at 2000 miles........since they recommend dumping the oil in 3k, you'll be right at 5k

BUT, on the other hand, I've also heard some people say that they believe the MMO does "better" cleaning when used in "fresh" motor oil.....

Soooo......you could perhaps use the MMO as the last 3000 miles of an extended oil change, then when you change the oil, add fresh MMO with your "new" motor oil.....just don't OVER dose the engine with it....MMO themselves states 1 quart of MMO in a 5 quart engine.....but I like to shy down to a pint.....and yes, I've seen seen good results (extremely dark oil drains at 3k......).


But yea, you're best bet, is to just wait for your next OCI, get some cheap SuperTech, QS, or PYB, and add the MMO with the cheap dino oil

+1 Nothing at all wrong with adding MMO to synthetic oil for the last 3000 miles of an OCI, as you stated just don't over fill it. I think the 3000 mile logic is sound, I mean how long do you want dirty oil in your engine after a clean up job? Using it with something like PYB for 3000 miles would be the way to go, unless your car calls for synthetic oil. If that's the case use the synthetic oil, and either run the mix for 3K, or remove a qt of oil at the 3K mark, and add the MMO and complete the interval.

 

[Donald]

OK, the dealer said the engine has sludge. Did he pull the valve cover and look or guess or offer that as an excuse. Then you say you switched to a synthetic oil and have not seen any change in the last 10K miles. (Change in ??) Did the dealer again pull the valve cover a second time? There must be something other than the idea of sludge you are noticing.

You are safe to use Techron fuel cleaner as labeled on the container. Its super stuff (PEA)and will deal with combustion chamber deposits. It may help with (minor) clogged fuel injectors.

I would suggest you continue with a top quality synthetic oil like PP or better yet PU and go 5K changes. It will slowly deal with the sludge.

I have the feeling there is an engine condition you are not mentioning. I would avoid MMO. Auto-Rx or Kreen would be the ones to use for heavy duty sludge cleaning. But as I said, synthetic oil will also clean sludge, but you cannot go extended OCIs if you are trying to clean sludge.

If you try Auto-Rx, you need to switch to dino oil during the clean and rinse cycles. Then back to synthetic.

 

[demarpaint]

OP if you have a few years then A-Rx might work. Many people have completed two full clean rinse cycles with little to no results, and were told to try again. Just use the search engine and see for yourself. Check the PCV system to make sure it is functioning properly and give MMO a shot. If you can find a buddy to hook you up with Kreen then by all means use it. Good oil by itself doesn't clean as well as oil with Kreen or MMO, especially in problem cases.

I'd give MMO 3000 miles, use it as I mentioned above.

 

[electrolover]

im all for adding mmo to synthetic for a short clean up intervaL LIKE 3K. some see it as a waist, but i think it just cleans better that way. its not a good idea for an extended drain because it will lower the tbn a bit and change the chemistry some.

one good idea is to add it to a syn when you have 1000 miles left before the change.

 

[NismoMax80]

Use the MMO in your gas as directed since you bought it.

Use Pennzoil Platinum syn oil 5k mile changes a few times to clean the sludge. If another mechanic confirms it sludge/or you just want to, run PP 3k miles instead once or twice then switch to 5k.

When you use up the MMO 4oz/10 gallons gas, next gas fill use Chevron Techron. It's BOGO at Advance Auto Parts and O'Reilly right now.

 

[morris]

i have been using mmo for over 10 years. my idea is to not use it in engine oil, unless you need to clean the inside of the engine. but that should not be needed if you change oil when you should. the best way to use mmo is to use oiler from, www.ampcolubes.com

 

[LeakySeals]

I'm a former user of MMO in the gas. Had for many years in the 80's 90's..But recently a bad experience. Had a P0420 CEL about 20 miles after putting MMO as directed in a 04 rav4 w/120k last year. Late model cars have tight emissions, any oil burning threatens your cat and the P0420 CEL. Further investigation the MMO MSDS shows the product is mostly solvent based "oils" from the 1930's. MMO was created long before emissions. If your an oil burner or have a lot of miles on the car, use at your own risk, oil is the enemy of cats.

 

[ahoier]

Or just lower your concentration....I typically go the 3 oz. to 10 gallons route......even if say, I fill up 11 gallons, I still add 3.....

Makes it easier to measure and handle, since I keep my MMO all pre-measured out, and refill the bottle when I get home

 

[BrianWC]

I never had any results w/ synth alone cleaning my sludged up 9-5.

 

[hardcore302]

I know you are getting bombarded with all sorts of suggestions, but try this: Short oil cahnge intervals with a quality conventional like Pennzoil yellow bottle, with a qhart of oil replaced by Marvel Mystery Oil. I mean like 2,500 mile short. You should see some cleaning going on there.

 

[jonny-b]

Hi.
I went to the MMO homepage, to find more info.
I found out a couple of things, and two of them are:

-MMO is fully compatible with all synthetic oils
-MMO can be in your oil sump together with a good synthetic oil, up to 12000 miles (according to Rich Kelly, and he should know).

 

[demarpaint]

Originally Posted By: hardcore302
I know you are getting bombarded with all sorts of suggestions, but try this: Short oil cahnge intervals with a quality conventional like Pennzoil yellow bottle, with a qhart of oil replaced by Marvel Mystery Oil. I mean like 2,500 mile short. You should see some cleaning going on there.


+1 That will work just fine, in fact you can stretch it out a bit more to 3,000-3,500 miles. MMO works fine with synthetic oil too, but why waste the extra money for cleaning if the car doesn't require synthetic oil? After all if the goal is to clean up an engine why keep the junk in the sump longer than you have too?