This is not a debate over the pro's / con's of pre-mixing. Do what you want, it's your car.

That being said:

I found that Mazdatrix sells some Japanese Pre-mix oil specifically designed for rotary engines. The sell it for about $5 a quart... Doing higher math: That works out to $20 a gallon. Supposedly this oil was run in the 787 car during the big Lemans win. Anyway.... my point being......Pettit sells the Protec pre-mix oil for $50 a gallon. So if you are a pre-mix guy... you can save some $$ buying from Mazdatrix.

I have even seen Klotz synthetic 2 stroke oil before at $35 a gallon.

Do what you want. I an just showing a source of less expensive oil.

 

I may give it a shot. Thank you.

 

Yup, Idemitsu. www.rx7.com sells it as well. I have been running their 20w50 in my FD for about a year now. I have some premix sitting around, just have to start using it

http://www.rx7.com/store/rx7/fdengine_maintenance.html

 

I premix because I took out my OMP and I just use Walmart 2 stroke oil.

 

I used to use the wal-mart brand premix also but I found it cheaper just to buy it by the gallon at advance. You can get penzoil for like 16 bux.

 

for people that premix and dont have omp's, what happens when your engine breaking? No gas=no oil correct?

 

hehe, interesting. no more engine breaking for the premix crowd. i never thought about that. . . aaaaaaaaanyways. . . you can change that if you have a programmable EMS. during engine breaking, my engine still injects fuel. . . very good point, though. . . as im sure there are a lot of average joes that didnt think about that.

 

Mercury Premium 2-Cycle TC-W3 Outboard Oil, made for water cooled engines. I don't premix, injection all the way. Price in NC at Advanced Auto or Marinas $18 to $19 a gallon.

 

PREMIUM PLUS 2-CYCLE OUTBOARD OIL


Specifically formulated with a higher concentration marine additive package to meet the needs of:

High-horsepower outboard-including direct fuel-injected-engines.

For use in extreme marine operating conditions.
Far exceeds Mercury in-house test standards, which are more than the industry's TC-W3 standard.
Cleanest burning-reduces carbon build-up in exhaust system.
Superior lubrication.
Meets all outboard and personal watercraft manufactures' recommendations for use of TC-Wll and TC-W3 oils in pre-mix or oil-injected 2-cycle applications.
Provides warranty protection for Mercury, Mariner, Force, Sport Jet and M2 Jet Drive 2-cycle engines.

 

I buy Idemitsu premix for $3.50 a quart from Aim Tuning in Indianapolis.

www.aimtuning.com

 

I am going to guess that no gas=no oil, but also no gas=no combustion, so whatever oil is already in there will hang around for a little while any way. At any rate, I wouldnt worry too much about it.

I might need to order up some oil for the REPU. I have been just using whatever wal-mart has but I am quite certain it amounts to more than $20 a gallon.

 

I'm with the marine oil crowd. The new oils are ashless which means fewer deposits left behind. Much less expensive per gallon.

 

That whole engine braking thing... makes me wonder.

But what about the 2 stroke crowd (of multiple other engines and applications) that use engine braking and never have an issue. they run premix. 2 stroke motorcycles for instance?

 

I used to use 2 stroke snowmobile injection oil. I wantd to go with something a little higher end. Who knows. Whatever works and is reasonably priced. I liked the fact that the oil I mentioned was enginered for rotorys

 

pffft

wal mart oil for daily driving
redline synthetic 2 stroke from the motorcycle shop when i race

cheaper than the idemitsu and pettit overpriced relabeled crap and does the same damn thing..

on engine braking- who said there is no fuel on engine braking? there is still fuel being injected!!!!!! quit passing around false rumors, premixing will not pop your motor or hurt it on engine braking..

 

on a normally setup pfc (this is all i can relate to), the injector duty cycle drops to "0". you can change it to where it injects while engine breaking. . . as mine is. so, how does fuel inject if there is no injector duty cycle?

 

if it is true that an FD cuts fuel completely on hard decel usually it is only for a few seconds anyways, if you are scared just pump the throttle once every 30 seconds or so if you are coasting down a long hill. 2 stroke oil does not wipe/burn immediately as it still is in the chamber for a short while even after the fuel has been burned off.

 

im not afraid of it. . . my car doesnt cut fuel unless i overboost. i highly doubt it has any REAL adverse effects. i mean. . . how long would you have to enginebreak in order to kill the engine?

oh, and i wouldnt lie about what the pfc does on an "in-gear decel" in its default mode. it DOES cut fuel unless changed to do otherwise.

also, this is common on most EFI cars. . . its pretty common for them to cut fuel on engine breaking. . . simply because it isnt NEEDED.

 

Most cars also have pistons... not rotarys that need oil injection. :-P

I dont see there being any problem with engine braking while premixing.

And like suggested above, you can always ahve a little fuel being injected at all times if that is what makes you feel more comfortable.

 

How do you change it so that it injects fuel while engine breaking?

 

pd viper how do yo u like the wal mart mix lol... ? i thought about using it yet thought it mighe be really dirty leaving some crud behind. comments?

 

If you were tuned on the razor's edge and tracking your car, then I'd worry about it. Otherwise, not an issue.

I wouldn't say that 2-stroke motorcycles "never have an issue" with engine braking. I roadraced 2-stroke motorcycles for many years, and you did have to be careful while tuning to ensure that you weren't running too lean on the pilot jet lest you seize a piston while braking for a corner (with obvious possible catastrophic consequences). Motocross 2-strokes aren't tuned to the edge and don't spend enough time engine braking for it to have any effect.

 

If there is fuel being injected on decel (above 1500 RPM) why does my wideband indicate o2? Why does the manufacturer say that there is none being injected and that is a good time to calibrate the wideband (Free air calibration)?

While I do not think this would hurt the motor because there is still oil in the engine for this short period of time..... Stop spreading false rumers yourself.

 

There is a PowerFC setting, I think its in the same area as idle adjustments. I dont remember the field name but basically the setting is for what rpm the injectors will start spraying again after you let off the accelerator.

 

So far, so good. I use the synthetic poulen/weed eater 2 stroke oil. My engine has lasted 2000 miles on it already.