I was just curious how most people deal with premixing. Stuff like, if you add the premix before you gas up, do you just guess how many gallons you're going to pump? Also, do you carry around a bunch of pre-measured little bottles, or do you just carry a jug of oil and a measuring device of some sort? I've always been curious, and I'm on the brink of ditching the OMP.

After I fill up i bust out my 32 oz bottle and just fill it according to how many gallons i pumped.

[quote name='Dramon_Killer' date='Apr 18 2005, 11:45 AM']After I fill up i bust out my 32 oz bottle and just fill it according to how many gallons i pumped.


[/quote]



https://www.nopistons.com/forums/pub...withstupid.gif simplest way, anything left over from the previous fill up will be sufficant enough untill the road mix's it up in the tank

I usually put around 16 gallons of gas in my car(filled up at around 1/8 tank left), so Id just cary a couple of 16 oz bottles of 2 stroke oil in my car at all times. I kept the small bottles filled from gallon jugs at my house. I always poured the oil in before I put the gas in, and then just filled the tank until it was full. A pen works well to hold open the flap door in the filler neck for pouring in the oil if the bottle isnt long enough to push it out of the way.

same.... i just fill up when it's about 1/8 tank.... sometimes i get a lil more premix than normal it in it... but i could care less. A long funnel is you freind also..

I've got this nifty plastic tube with a fiting that screws onto your generic-sized plastic bottle. It has a valve on it that you twist to open or close it, so it's easy to control how much oil you're dumping in. I think I got it at an advanced auto, or maybe even wal-mart. Anyway, I always put the oil in after I fill up with gas.

I have a graded syringe I got from Auto Zone. Made for mixing 2 stroke oil.

like the others i fill up around 1/4- 1/8 tank add 500ml's i carry a 1 gallon jug of oil around.



oh and i fill it up first, make sure to use TC-W3.

Oh god I cant wait to be rid of the OMP and all the smog crap under the hood...... https://www.nopistons.com/forums/pub...IR#>/smile.png

thanks for the replies! I'll probably end up premeasuring out like 16 oz. bottles, dump in 13 oz. to start with, gas up, then add however much more I need. I never really reach 14 gallons of gas, are the s5 tanks bigger than s4? (our convertible just received 16 gallons, blew my mind)

S4 is 16.6 gal, s5 is 18.6 gal.



A fraction of an ounce isnt enough to worry about. Id just dump in 14 oz, and then fill up.

[quote name='ZenRXSeven' date='Apr 18 2005, 07:35 PM']I've got this nifty plastic tube with a fiting that screws onto your generic-sized plastic bottle. It has a valve on it that you twist to open or close it, so it's easy to control how much oil you're dumping in. I think I got it at an advanced auto, or maybe even wal-mart. Anyway, I always put the oil in after I fill up with gas.


[/quote]





I have the same thing, and yes it was at advanced auto parts; however a small long funnel is far easier. Basically, I have the advanced auto part device, a small long funnel, and two 16oz (Penzoil yellow bottle from walmart or kmart) at all times on the car.



The worst part is cleaning the funnel afterwards https://www.nopistons.com/forums/pub...1047683664.gif

[quote name='knonfs' date='Apr 19 2005, 10:04 AM']



The worst part is cleaning the funnel afterwards https://www.nopistons.com/forums/pub...1047683664.gif


[/quote]





Which is why I used a pen to hold open the flap door in the filler neck.

[quote name='mazdaspeed7' date='Apr 19 2005, 10:54 AM']Which is why I used a pen to hold open the flap door in the filler neck.


[/quote]





I am afraid of the pen slippin' from my hands and ending up inside the tank https://www.nopistons.com/forums/pub...1047683358.gif

[quote name='knonfs' date='Apr 19 2005, 11:51 AM']I am afraid of the pen slippin' from my hands and ending up inside the tank https://www.nopistons.com/forums/pub...1047683358.gif


[/quote]





Whats it gonna go, get wedged in the fuel pump? https://www.nopistons.com/forums/pub...1047683664.gif

yup, tcw3 from the auto store.



i carry about 3 32oz bottles at most.



fill up gas, poor in 1 oz per 1 gallon as pump meter tells me. close cap, clean up with paper towels at gas station and head out. no tools needed for me, just poor into hole. flapper seems to let in the oil without me moving it.



also, i have only been able to fill 15 gallons maximum. can't imagine jspec engines filling up differently if the tank is the same as aspec

Wow, alot of you guys fill the tank. I personally dont like the feel of the extra weight.

I know I'm a newb, so dont flame me too much here.



Why would you need to premix the gas? I've ridden dirtbikes and I know two strokes need gas premixed but why would a rx7 need to be. https://www.nopistons.com/forums/pub...1047683664.gif

[quote name='bushy' date='Apr 19 2005, 03:32 PM']I know I'm a newb, so dont flame me too much here.



Why would you need to premix the gas? I've ridden dirtbikes and I know two strokes need gas premixed but why would a rx7 need to be. https://www.nopistons.com/forums/pub...1047683664.gif


[/quote]

http://rotaryengineillustrated.com/

http://auto.howstuffworks.com/rotary-engine.htm



Check out those sites. The apex seals have combustion chamber on either sides, and run along the rotor housings, so they need some form of lubrication. The stock setup from Mazda has oil injection, but some people don't like the problems associated with the system after 20 years of age, they may say it doesn't lubricate well enough, or they don't like how it consumes the already-used engine oil. Premixing gaurantees lubrication all across the apex seal, and eliminates the stock oil metering system.



There are other points, and some may argue against what I post, but that's the main idea.

i just use a old oil jug, pour slowly no spillage.

i bought an ice cube tray, it fit perfectly in the spare tire and held like 3-4 16oz bottles, on an s4 fillup, i would just put in half a bottle

[quote name='mazdaspeed7' date='Apr 19 2005, 10:34 AM']Whats it gonna go, get wedged in the fuel pump? https://www.nopistons.com/forums/pub...1047683664.gif


[/quote]

Youre at a gas station, they always have those long straws. Just grab a straw when you pay for your gas.

You actualy pay for gas with paper money? https://www.nopistons.com/forums/pub...IR#>/blink.png







https://www.nopistons.com/forums/pub...R#>/tongue.png

i carry around an old bottle of two stroke oil that i refill at home...



everytime i fill up, i check how many gallons is put in the car, and pour the same amount of 2 stroke in ounces. the bottle has lines on the side so you can tell how many ounces you put in.

[quote name='RONIN FC' date='Apr 19 2005, 12:10 PM']Wow, alot of you guys fill the tank. I personally dont like the feel of the extra weight.


[/quote]



A tank of gas is around the weight of a light passenger.

So, let me guess, you personally don't like the feel of having friends in your car? https://www.nopistons.com/forums/pub...DIR#>/wink.png



The difference in acceleration between a full tank of gas and a near-empty tank of gas is less than 0.1 seconds in the quarter mile. Do you really think you can feel this difference?

If you want to be technical, the 16 gallon difference between full and empty on an S5 is only an 88 lb difference in weight, considering gas weighs 5.5 lbs/gal.



It may feel a lot more sluggish that it really is. I could notice a bit of responsiveness lost in my GTU, but overall acceleration when running through the gears was the same for all purposes.

I have a question that may have been asked before but I cant find anything about it.



Can you premix while retaning the stock oiling system? Does anyone do this? Woudl this cause any problems with the motor?



I woudl love to do this if it ment a bit more engine life and better lubrication. Any advice?

[quote name='RX7_TT' date='Apr 20 2005, 07:54 PM']I have a question that may have been asked before but I cant find anything about it.



Can you premix while retaning the stock oiling system? Does anyone do this? Woudl this cause any problems with the motor?



I woudl love to do this if it ment a bit more engine life and better lubrication. Any advice?


[/quote]



you can but the amount you mix is much smaller, like 4oz to the tank

So what kind of blending equasion am i looking at here?



Im putting in a brand spanking new S4 TII motor that has been streetported in my car this weekend, and im considering also premixing but im not sure how much i should use. Keep in mind i work in liters not gallons as im Canadian eh :P

[quote name='scathcart' date='Apr 20 2005, 09:51 PM']A tank of gas is around the weight of a light passenger.

So, let me guess, you personally don't like the feel of having friends in your car? https://www.nopistons.com/forums/pub...DIR#>/wink.png



The difference in acceleration between a full tank of gas and a near-empty tank of gas is less than 0.1 seconds in the quarter mile. Do you really think you can feel this difference?


[/quote]

I dont know about you, but I dont put passengers behind the rear wheels like the gas tank is. In fact, when I have a passenger (in the seat) handeling is more predictable. It feels like I dont need to preload as much before a sharp left as I normally would driving solo.



And drag racing isnt all people use their cars for. I can feel a difference in handeling when the tank is full, Just like if you added 80 lbs in front of your front wheels you would notice a difference.



Back to the topic;

This topic has been covered a million times.



http://www.fc3spro.com/TECH/FAQ/premix.html



- RETed

[quote name='RONIN FC' date='Apr 21 2005, 06:15 AM']I dont know about you, but I dont put passengers behind the rear wheels like the gas tank is. In fact, when I have a passenger (in the seat) handeling is more predictable. It feels like I dont need to preload as much before a sharp left as I normally would driving solo.



And drag racing isnt all people use their cars for. I can feel a difference in handeling when the tank is full, Just like if you added 80 lbs in front of your front wheels you would notice a difference.



Back to the topic;


[/quote]



80 lbs from the front wheels is the A/C, power steering, and emissions removed from a car. No difference in "handeling" [sic].

What can I say? Maybe your not sensitive enough of a driver to feel.

Maybe you spend most of your time driving in a strait line. Which is fine, but there is no reason why you shouldnt feel a difference with a passenger or a full tank of gas in a 2700 lb car.

cmoe on guys, stick to the topic or leave it to PMs