Ref: "Super Tech" Universal 2-Cycle Engine Oil
As far as I am informed........since this is not a fully synthetic 2 stroke oil, you better pay a little more for a fully synthetic one (JASO FC/FD) because it seems to burn cleaner, gives less residue and therefore is also less harmful for your cat...........

 

To get a 200:1 mix on a clean tank, you would need to add about 10 ounces of 2 stroke. Easiest way to figure out the amount needed in a future fill up would be to divide the ounces of gas being added by 200 to maintain that ratio. Say you're adding 10 gallons to an already premixed tank. You would 1280oz gas/200 = 6.4 ounces of 2 stroke to add.

ETA: I would be hesitant to use the walmart 2 stroke unless its JASO FD. I don't know if it is. My first attempt at premix I used Lucas semi-synthetic 2 stroke which I found at a local O'Reilly's.

 

I use the lucas semi-synthetic from checkers/o'reillys, it works very well for me. It (and most other premixes I assume) has just taken a large price hike though, was 5.99 I think and is now 8.99 for the same quart.

 

I have been using 6 oz. of Idemitsu mixed with 1 oz. of FP+ since August. Before that, I was using 6 oz. of MMO per tank. Since the switch, I have noticed a smoother idle and slightly better gas mileage (just 1 or 2 mpg improvement).

 

Before I started premix (saber pro) I was getting pretty much 300 km per tank for city driving. Now it seems that I'm getting 280 km per tank. Driving habits are the same and I'm not saying it is premix related just that it happened right when I started adding premix.

 

Hi, I just bought my first RX-8. 2004 6 spd, 88,000km's.

Anyway, even after reading this thread I can not decide whether to pre mix or not. I drive 100km every day all highway.

My main concern with premix is would this not possably start clogging the fuel injectors, or lower the life of the fuel filter, or even mess with air/fuel ratio?

I am interested in the idea of premixing. But am a little reluctant at the moment. Anyone swear by pre mix, or swear against it?

 

no one swears/doesn't swear by it. It's debated as to whether or not it does anything. I premix for piece of mind. You gotta make your own decision.

 

I was skeptical myself, but have found only benefits in doing so. My 8 runs smoother and gets better mileage. Good enough for me.

 

Is this what your talking about? I had been using Castrol T2 for a few months but can't find it now, so I decided to give this a try.

 

Try running synthetic blends when possible. It's a bit better for both the combustion cycle and the fuel system
Different summer\winter fuel blends?
Don't bother buying Castrol premix oils again. They tend to leave a bunch of deposits in conditions where different oils don't. I have tested them in some 2 stroke engines only and didn't like the results at all
The worst one is their TTS formula. The gunk it formed struck the carb open on 3 different occasions.

After that is just premix, they're all pretty much the same except the ones that really are sub-par.

 

Thanks for the heads up. I'm also going to be trying out this "FP+" stuff I keep hearing about today if I can find some.

 

http://www.lcdinc.com/products_fuel_power.php

I use it without issue. Not sure if it is doing anything beneficial, but i hear great things about it from piston engines.

 

I have owned one RX3, two RX4s (both sedan and Coupe), all three generations of RX7 (stock and modified to race), and a 40th Anniversary Edition RX8. I have NEVER had a rotary engine failure in over one million miles of rotary driving (street and track) since 1973.

A key factor in that record of reliability has been to ALWAYS use premix. The proper premix will help lubricate your engine for longer life. The proper premix will never clog your injectors. The proper premix will help your seals last longer and wear less.

Especially if you have an older engine with lots of miles on it and you want it to last, premix, premix,premix. Longtime rotary drivers know the benefit, as well as rotary racers. And you will get slightly better mileage too.

 

Fact is, until an independent lab runs controlled long-term tests comparing our Renesis engines with and without premix (running them on a test bed at different rpms, loads and temperatures), no one can say with any authority that premix is advantageous, detrimental or just a waste of money.

 

You don't need a lab to do so, just tear down several different engines that ran with and without premix. Out of that you can understand if premix works or not and get an approximate grasp of "how much" if the first is the case.
It has already been done before with the results in favor of premix.

 

Racing Beat also tested Premix with regard to performance and documented the benefit. Case is pretty solid it seems.

 

That's cool, but I would think the engines need to be tested under identical conditions long-term to factor out other variables. Were both groups of engines maintained identically? Run at the same RPMs under the same loads for the same amounts of time?

I'm not saying pre-mix isn't a plus, just that you can't say, conclusively, it is short of well-controlled long-term testing, is all.

 

It would pretty much require two engines build side by side with part-level inspection to ensure that they are as close to identical as controllably possible, set up so that they both use the same cooling system, same gas source, same oil source, and run identically in respect to RPM, load, ambient temp and coolant temp (with all 4 varying on a pre-determined pattern that close closely represents a sample of an engine's actual life cycle). They have to have their own plugs and wires, but theoretically you could set up a single coil source that provides the charge to both engines. One having a premix feed in the gas line that does not allow it to go downstream to the tank that fuels them both. Perhaps a smaller in-line tank for each that the premix is added to one with a method of stirring to ensure a consistent mix.

After a predetermined period of time and/or revolutions and/or pattern completion, tear down each engine side by side and measure wear, carbon buildup, and any other signs of potential benefits or penalties. I'm not sure if there would be a point to having oil samples on the oil-out from each engine, since the return oil never saw the combustion chamber, which is where premix is targeted.

I'm probably forgetting other controllable factors.

Though this example would also have to be with 1 set premix level. A perfectly correct test would have several engines, at varying premix levels, and even different premix fluids at the different premix levels.




You would have to do something very similar for a conclusive answer to the oil war (even if that answer ends up being "it doesn't matter!" )




Edit:
I'm not saying premix does or does not work. But until this level of test is done, there will always be people that have "what if ..." or "what about..." or "that doesn't quite apply to me..." to throw doubt on the directional findings for the people that are trying to figure it out for themselves.

 

I had a chance to do that on a group of 10 engines so it isn't worth much.
However all you really need are the same service intervals and similar driving styles to determine if premix works (fuel is the same of course). To determine other stuff like bearing wear that may not be enough.
Premixed engines looked cleaner and with softer deposits. The apex seals weren't as worn on the inside as their non-premixed counterparts for what I can tell

 

Guess that means you can't buy it locally....

 

I use Lucas 2 cycle semi synthetic...

but everyone uses something different, it really doesn't matter.

 

I use left over Bacon grease. It works great and my car smells like bacon all the time.

 

mmmmm baaaaccooonnn

 

You said exactly what I've been trying to say, only way better.

 

Oddly enough you are the 5th person to say something to that effect...

Le Sigh...