I Working on making my car run on premix. I have a few questions.

1. Best 2 stroke oil for the price and common to find in auto stores.

2. Is there anything wrong with leaving the stock oil injectors in stock location to not have to buy something to block those wholes.

3. Lets say you fill up the whole tank to where fuel pump stops due to it being full.

Could you still have enough room to put another 16oz with out topping over the fuel tank?

 

Any 2 cycle oil with a TC-W3 rating is good to use.
Leaving the stock oil injectors in is fine as long as you so something to plug that air port or else it creates a vac leak.
16 oz. is 2 cups. There is probably more variance than that between when different pumps shut off at the gas station. I wouldn't worry about it.

 

i would put in in before you pump so it mixes better

 

hmmm... I searched and came up with ... https://www.rx7club.com/search.php?searchid=3354051

and this... https://www.rx7club.com/search.php?searchid=3354053

 

is that your engine bay? looks nice. yea oil in before gas for sho thats what i do and what i do is always perfect.haha jk

 

I typically get Penzoil Marine Outboard Synthetic. Its about 10 bucks for a gallon jug.

 

Cheap *** walmart Oil...

 

most of you guys fill the tank everytime to get the right 2cups(16oz) in there?

 

I have a pump attachment connected to my quart bottle. Mess free premixing rocks.

one pump = 1 oz.

Get it at your local autoparts store today!

 

I get the same.

I dont know... I dont like to pump stuff.

 

+2 to that. I found that stuff too and love it. Excellent price and works wonderfully. My personal choice is the Mobil 1 2T synthetic 2 cycle oil though, but it's like 8 bucks a quart and overkill for daily driving.

Btw, 1 oz. per gallon is a pretty thick mix if you're just using the car as a daily driver. If you don't drive the car hard and keep it below 4k RPM most of the time, 1/2 oz. per gallon will do you plenty.

The way I add it is as follows for 1/2 oz. per gallon when the car is close to empty. Keep in mind I run 1/2 tank of fuel all the time to help with gas mileage. You can adjust according to how much fuel you put in:

Put in 2 gallons of gas
Put in 2 oz. of pre-mix
Put in 5 gallons of gas (now at 7 gallons)
Put in 2 oz. of pre-mix
Put in 1 gallon of gas

This would help to mix the pre-mix in a little better with your fuel and also gives you chances to clean out your funnel when you alternate. May seem like a pain in the *** but works well.

You can leave the stock oil injectors in there as long as you plug the vacuum nipples and the OMP lines to prevent a vacuum leak. Your best bet is to get the correct size bolts and remove the injectors though. It's not like it's that hard to do.

 

ok. Thanx guys
A couple of more things.

Will i have to do any extra maintainace? Like change my fuel filter twice as aften?
Or maybe run some fuel injector cleaner evry couple of months?

What do you guys suggest?

 

You shouldn't have to worry about it clogging your fuel filter because it's such a light mix that it shouldn't affect it much, if at all. I know that fuel injector cleaner can help, but I'm just not sure if it'd be a good idea while running pre-mix. I'd recommend that you do the "steam cleaning" method using water though. It helps to de-carb the rotors and housings and keep things cleaned out.

 

Well, thanx for all the help guys.

Chris

 

One more thing!@ U said to buy the penzoil synthetic. DOes it matter that i use regular oil in my motor?

I figured it wouldnt matter since it goes in the fuel tank. But i know your not suppost to mix the 2 oils.

 

ok...im a little confused. i did a search on premix. im wondering why exactly u guys do this. does save the life of the motor? Does the car smoke? etc.

 

The cheap walmart stuff, or anything else with a TC-W3 rating will work great. It will provide more even lubrication and burn cleaner, compared to the normal system which injects motor oil into your engine. That's why it extends the life of your motor. Premix will not smoke or cause any problems whatsoever as long as you don't exceed the recommended 1 oz. per gallon by too much.

As with motor oil, synthetics are unnecessary but helpful. I don't trust Penzoil myself. But since their 2-cycle engine oil is designed to be burned in 2-cycle engines (obviously), I can't see it leaving deposits or doing anything else bad. As for other brands, there are:

Idemitsu: Designed specifically for rotary engines. The oil Mazda uses in rotary race cars, etc. Order from Mazdatrix, which imports it from Japan.
AMS Oil: Loaded with an insane level of detergents to keep your engine squeeky clean. Seems to be popular around here.
Royal Purple: Provides slightly more horsepower & mpg through lower friction.

All of those provide higher detergent levels, withstand more extreme conditions, create less wear, etc. compared to mineral oil. But they aren't at all necessary for casual street use. The other good brands for synthetics are Mobil 1, Redline and Neo. They make good synthetic motor oil, so I'm presuming they make good synthetic 2-cycle engine oil.

 

The engine is oil injected. The oil injectors can clog. The oil metering pump can fail. Motor oil doesn't make a good combustion lube.
So, some owners decide to go premix. This means they disable the pump/injectors and add 2-stroke lube to the fuel.
As long as you don't overdose, it won't smoke. I'd wager that it would extend the life of the motor. Motor oil has way too many additives making it less efficient as a lubricant in the combustion chamber. You still practice normal sump motor-oil/filter changes but the oil level doesn't change during the interval.

Motor oil belongs in the crankcase. 2-stroker oil belongs in the fuel.
Any motor oil can be used in the crankcase as long as it meets the weight for your weather conditions. You do NOT mix 2-stroke oil with the motor oil. You should make an effort NOT to add motor oil to your gas(emergency use is better then no oil).
BTW, its bull that types or weights of crankcase motor oil can't be mixed. They can!

1. ANY NMMA, JASO or API certified 2 stroke should be used. The current and common NMMA spec is TCW3. Don't be wowed by silly marketing or advertising bull.
2. It depends. What year vehicle? what method of disabling MOP?
3. You should add the full dosage prior to filling up. Is it so hard to calculate the amount of fuel you will be adding by looking at the gas dash gauge or your wallet?

Most FI cleaner/drygas bottles can be reused. Since they come in various ounce sizes, you can refill a bunch in your garage and keep them in your trunk. Other larger bottles come with ounce measurements. This eliminates the hassle of measuring while at the fuel station.

 

Same here. Its so easy to come by and I use the little white bottles that are next to it because it makes it easy to prefill bottles before you go out. Plus you can see the level in ounces on the side of the bottle.

 

ok so i can throw sythetic 2 stroke in my gas tank without it being a problem. since i dont use synthetic for anything else in my car.

 

Yes. In reality, quality synthetics (AMSoil, Royal Purple, etc.) are just fine to use even with the stock oil injection system. When you premix you can use any oil you want since it doesn't get burned.

 

The problem with certain synthetic motor oils (not 2-stroke) being injected into the engine is that they might not burn completely. A long, long time ago they used to shrink the seals too. But 2-stroke oil is always designed to burn completely, so I doubt a 2-stroke synthetic will be a problem.