I got my motor rebuilt about 3000 miles ago. I've been looking into premixing in my car, and I was just wondering if its better to use the OMP or to premix instead. Also, I noticed in one thread that someone said its ok to use synthetic if you premix. I had been told that synthetic is only advisable if you change the oil often, such as in race cars. Is this due to the OMP?

 

There is alot of arguement about removing the omp, in my opinion, id rather just change the oil and drive the car, and not have to worry about mixing right and that good stuff. But if your that compelled to do that, than it is better for your car, it runs better and the engine stays cleaner cuase youl be burning 2 stroke oil instead of 4 stroke oil... dont ask about synthetics, its a lost cuase... IMO just use regulur oil. hope that helps some.. listen to the experts

 

Do a search and look in the archives. There are two major threads about this. I have one and there is one in the archives. You have to descide on you own but I would tell you that pre-mix is good and is probably lubricating more than the MOP will

 

its personal preferance, i got rid of my OMP for no other reason than my OMP lines were screwed and i didnt want to buy new ones, so plugged it up and begun to premix. its not a big deal, although it does burn cleaner, and when i broke down my engine prior to useing premix you could tell where the oil actually got on the houseing and was actually lubricating.

-Daniel

 

Thanks for the input. I had searched the archives, but I didn't find anything on which was better. I think I'm just gonna leave it as is until I start racing a lot more or I do something major in the engine bay where I'd already be there.

 

Well, when I tore appart my engine that had been running on the MOP the rotors were totally CAKED in carbon, however, when I tore appart my engine that was running on premix with no MOP, the rotors were Shiny! no carbon at all except for a tiny bit in the 'combustion-chamber' (both using castrol GTX2)


You decide which one you'd rather.

 

http://fc3spro.com/TECH/FAQ/premix.htm


-Ted

 

This is a long standing debate. Some swear by it, some swear at it (ie. me). You need to read all the info and decide for yourself. Though I know more then one owner who have personally told me that they should have never removed the metering oil pump.

 

I agree with that. I've never read anything astounding to me in the arguments in taking it off, so I see no point to do it. It wouldn't benefit you in anyway at all. I'd keep it on.

 

I have been running pre mix for about 2 years now. when we took apart my motor a few weeks ago to change up the ports. the rotors still had some carbon on them but not any where near like they where before I used premix. and where very easy to clean up.

every time I go get gas I look forward to the privlage to freak the people out when I pour 2 stroke oil in the tank.

 

787B race car used Pre-mixed fuel. To me the descission by the mazda race people would be good enough for me. The reason being is that they descided that two stroke oil does the job and can and does handle race or high performance conditions. A 4 Rotor peripheral ported engine see's a lot more abuse than your daily driver so that means if its good enough for that engine is more than adequate for our engines.

The fact that I have had no problems since I went to pre-mix also says something about it. If it didn't do the job well enough my engine would have blown up long ago.



Two stroke oils have anti carbon build-up properties which help reduce the carbon buildup after they are in use and probably cleans up some of the carbon buildup that was already there when you started.

 

I'm of the philosophy of compromise, so I'm using both. I noticed some pretty good wear on new housings after only 4K miles on my last motor. I use the PFC and there is some debate on whether it give the full juice from the OMP, so I also add 2 to 3 oz. of racing two-stroke to every tank. At $5 a bottle that equates to an extra $1/fillup - cheap insurance for my new pinned and ported motor.... (FD vs. FC, but who cares?).

Beast

 

I've never seen evidence that pre-mixing is bad, except from the lazy people...


-Ted

 

<---lazy....i stick to OMP...nothing wrong so far.....