I was thinking if it would be possible to drill into the gas filler neck, attach a fitting and run a hose up to a reservoir with some kind of flow switch/****. that way you can just turn the switch, let the premix flow how many ounces you want and shut it off. is there any reason this wouldn't work?

 

That looks more complicated than actually pouring in 6 oz out of 12 oz bottle.
Not to beat on your idea but it's sort of overthinking a simple task.
But I must admit,it looks kind of cool though!
..
Gives me an Idea!.(uh oh..!)
take a 40 oz Whiskey bottle and get one of those 1 shot dispenser things..
Like this:
http://www.ebay.com/bhp/shot-dispenser
.(can you imagine the looks you would get when you put a 40oz'er up to the gas tank?...lol!)

 

yes it could work, you would still need to only dump the oil before pumping gas into the tank to mix it all up.

it will also be more roughly added than from a smaller measuring bottle, you could mark lines on the tank for say 12 ounce graduations and just open it up to dump from one line to the next.

 

There was an old thread where someone used a windshield washer bottle and pump and calculated how many ounces where pumped per second.

Not sure where that thread went, but it was done a few years back.

 

i was planning to find a small size reservoir and mark it 5 ounce intervals. Just trying to make premixing less messy. i currently use baby bottle and a funnel lol. with this, just gotta turn a switch, no touching oil. no need to carry premix bottles around the car.

 

That is actually Brilliant. i was looking at the sub zero coolant bottle just now too. thinking if it could work

 

Even with the S5 OMP still working, I decided to start premixing, more for an insurance purpose than anything. I did some calculations based on the oil and fuel consumption rates and it works out to an average of about 1/2 oz per gallon. So for normal street use I am only adding 1/4 oz per gallon and for track day events I will bump that up to 1/2 oz per gallon to be safe. I filled an empty 1 quart Sta-Bil fuel stabilizer jug with TC-W3 oil and I have a cheat sheet in the car just encase I can't do the math in my head. It makes for accurate measuring as well as fast and easy way to pour it into the tank. Since I am still running the OMP, I just add the fuel and then add the required pre-mix oil. Fuel slosh in the tank mixes the oil fairly quickly, plus the oil is designed to disperse evenly in the gasoline. If I didn't run the OMP, then I would add the oil first and then gasoline in specific quantities to make sure it mixes quickly. I keep the bottle and a shop rag in a Zip Lock 1 gallon freezer bag next to the battery in the storage compartment behind the passenger seat. No odd looks or questions yet

 

I just always pour in 4 ounces and add 10 gallons of gas. Easy, done.

 

Why before pumping gas? I figured with the fuel pump running, and the car moving, the oil will mix pretty well. no?

BTW - I do 1oz per 1 gal

 

Think of having chocolate milk. You have a glass of milk and you put your chocolate syrup in . it doesnt spread out much.

now put your chocolate syrup in first, then pour your milk overtop. it mixes up (a little) better.

 

I doesn't work quit that way. The latest 2-stroke pre-mix oil, especially TC-W3 is made to mix very easily with and evenly disperse into gasoline. Try it both ways in a jug and see for yourself - either way works very well. Remember to that you do get the extra mixing action of the gasoline poured in after the oil with that method.

Personally I don't want to make frequent trip to the gas station to buy just 6 or 10 gallons at a time. I would rather fill up whenever I need/like to, whether it's a 2.5 gallon top off or a +16 gallon fill up. As always, to each his own. Just remember that with premix, some 2-stroke oil is better than none.

I do know that using the Sta-Bil bottle for the premix oil is very convenient - graduated scale on the long filler tube section for both measuring and dispensing, no need to carry a funnel.

 

Re-route the rear wiper bottles plumbing into the old nipple for the charcoal canister on the top of the tank. No need for drilling. Push the rear wiper spray button to fill 'er up and then fill with gas.

 

Yes...except that if you pour in the oil after the gas, some oil may remain in the filler neck/tube, and any oil left here is oil that doesn't get mixed at the proper ratio with the fuel. Whereas if you pump after you pour in the oil, the gas will wash it all down on the way and you can be confident it is mixed properly.

You all are quibbling over minutia here, why are you purposely trying to find ways to change the 'procedure"?

You already have to get out of your car to pump the gas to begin with. You're saving yourself exactly zero work by not pouring in the bottle of oil while you are out there. Meanwhile you're trying to engineer some solution by which you have to spend hours or days engineering plumbing and switches to do the same job you can do in 5 seconds.

You already have to pour the oil in the tank. You can pour it before or after you pump gas. One way is more likely to mix 100% thoroughly than the other. Why choose the one less likely to fully mix, and then argue that it might just mix okay anyway, when you know the first method will work perfectly and there is no downside to it?

Sometimes I think you guys just look for **** to engineer even when nothing is wrong with what you currently have.

 

I completely agree ... What's wrong with the OMP anyway? You people are paranoid that your engine is not getting lubed enough? The stock OMP pulls plenty of oil. Maybe not on an RX-8 though...

 

I find it amusing that people are Multi-tasking every day..with Smart phones,etc,but when it comes down to Putting 2 stroke in an Rx7 they find it Inconvenient.
Open gas door,unscrew cap,pour 2 stroke in tank,insert gas nozzle,squeeze.......You know there was only ONE step added to that "pit stop"??
You probably spend more time correcting a Text message than you would spend on pouring in 2 stroke.!

 

no ****!

 

It's not a problem to pour in 2 stroke. But if you had the choice to press a button for a couple of seconds or go measure and pour oil into the tank. Which would you choose? If a family member borrows my car, I would rather them not have to get out and do anything, just press a button. Oh and btw, its illegal to pump your own gas in nj. All our pitstops is just rolling the window down.

 

Yeah. That is pretty gay. Last time I went to rotaryfest I literally stood next to the guy and watched him pump my fuel. My luck, the dumbass would forget to put the fuel cap back on or something. Is there any reasoning behind having a gas attendant do it? Are they trained to do it or something?

Have you considered using the RA omp adapter to inject 2-stroke via seperate container? It may or may not meet your needs, depending on how much 2-stroke you need and your tb setup.

 

Yea state law claims you need to be trained to pump gas here. Only a few places let you do it yourself. And omp is deleted on both my cars, so not bothering with that. It's not a big deal at all as everyone is making. Just thought it might be a creative solution. I will still try and find a decent size reservoir and try it out with a washer fluid injector.

 

i run through 5 quarts of additional oil in the 8 for each 3,000 mile oil change, that's 1 quart every 600 miles. that is also city driving, not pushing the engine revs high very often so oil injection is nearly minimal at that level.

even with that massive amount of oil injection the renesis engines still have issues with apex seal wear and side seal warpage.

 

Dang!

 

Do you own a 1st gen RX-8? My brother in law worked at a Mazda dealer when they were released and left and right they were being warrantied out at 30,000 miles or less with low compression or blown seals due to the faulty injection systems. Seems like every craigslist as for an RX-8 says new engine installed by dealer.

 

yes, it's a series 1 '04. still on the original engine at 85k miles.

it passed hands 2-3 times before it wound up in mine, the 2 previous owners before me believed the engine was toast but it was just flooded. i didn't really care about the history, it needed work, it had fishbowls in the tail lights, the front bumper was hanging off, battery was dead, headlights fogged up but there was potential there, even if the engine was in fact dead.

problem is there is still far too many idiots diagnosing these cars. a flooded 8 will give results similar to a failed engine, mazda has TSBs to deflood the engine and decarb it, which should be performed before diagnosing a faulty engine. but any random dickwad shop is going to disregard the no start condition and say "you're engine is done".

 

I can't believe it is illegal to pump your own gas in some states.

When my brother moved to Portland oregon, we had to get gas for the moving truck just inside the border of oregon and I was confused when some girl walked up to me and asked "cash or credit".

 

First thought: "Not now! My wife's right there in the passenger seat."