100:1 Mix

Discussion in 'Motorized Bicycle General Discussion' started by Retmachinist, Jul 24, 2009.

  1. mapbike

    mapbike Active Member

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    Tom,

    The only local source I have for the Opti2 is in small 1.8oz prepackaged amounts, package is stated to be for use in one gallon of gas, the recommended mix that the small package has figures out to be 72:1, I normally put about 1.2 gallons of fuel in my jug and add one 1.8oz packet of Opti2 this actually figures out to around 85:1.
    100:1 is 1.28oz of oil per gallon which I know from all the guys here that use it is a great mix, but I have always just used it at the 80-85:1 mix which is actually less oil in the mix than is recommended with the 1.8oz prepackaged Opti2 I buy at my local hardware store, what i get is called the Eviro Formula, maybe that is why it is a different mix ratio that is recommended....?????

    [​IMG]


    Maybe I haven't been running the better oil this entire time, maybe there is a difference in the EVIRO FORMULA and the standard opti2, someone who can snswer this please do...

    Map
     
    #981 mapbike, Aug 15, 2013
    Last edited: Aug 15, 2013
  2. mapbike

    mapbike Active Member

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    something I just remembered also is that when Tractor Supply here in my area was selling the Opti2 that was being packaged under the Arnold brand name, it also was a 1.8oz package that was said to be for one gal of gas mix., it was called Arnold 1 Premium Mix if I remember right.

    Sears also sells prepackaged Opti2 under the Brand ( Sten Mix ) it is also stated to be 1.8oz for 1 gal of gas which is 72:1 mix.
    [​IMG]

    http://www.sears.com/interlube-oil-...REDIRECT=false&prdNo=9&blockNo=9&blockType=G9


    Lowes sells the Arnold 1

    [​IMG]

    http://www.lowes.com/pd_51885-442-490-000-0009_4294820955_

    Who knows maybe Interlube thinks that most people wont really milk the package for all the oil it has in it and the extra is to make sure that even if they just turn package up ad pour they will at least get enough oil in the mix to be at the 80:1 - 100:1 ratio, kinda a way to make the mixing from the package more idiot proof......LOL! just a thought.

    Map
     
  3. Rage

    Rage New Member

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    Can some one help me with carb problems??
     
  4. BigBlue

    BigBlue New Member

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    Post your problem in the appropriate section of the forum and I am sure you'll get some help. Post it in 2 or 4 stroke Bicycle Engines & Kits, depending what type of engine you have.

    Good Luck,

    Chris
    AKA: BigBlue
     
  5. stinky

    stinky New Member

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    I made the leap of faith and bought some Opti-2. 10.95 for 12 oz 10 gal size.
    Mathwise it comes out about same price as a 24 32:1 ratio oil at 4.99 per 32oz.
    Math is my worst subject so don't quote me on it. I ran the numbers and it was close enough that I sprung for the Opti.

    Ratio I decided to measure out in a 10ml graduated cylinder. And the
    bottle is accurately calibrated to 1.28oz or 37.85ml. I put in about 38.?? whatever, so a lil lil rich. Now the oil mark is off, but I will just get calipers and
    score the bottle to the new line. So the in the bottle version it is measured out for 100:1.

    Bike kicked over quickly. I was unsure about the choke setting, but I believe I started it and ran it without using it. The idle was not set right
    so i was unsure if I was choking it or what as nit kept dying out unless i was on throttle a little.

    Ran around the block for like 10 to 15 minutes in two shifts. It seemed rich.
    I have a KnN style air filter, and I wrapped a thin foam prefilter around it.
    Put some oil in both. Perhaps that is wats boggin me. No dieseling or knocking, but the throttle goes further, but no more power comes on.
    When I have the clutch pulled in it revs a lot higher, mind freaking vibrator!!!!
    I have 32 tooth hub so maybe its not at right gear ratio to hit peak rpm. Honestly its fast enough as it it!!

    Anyways cooled down and pulled plug. Blackish soot on plug, so it is rich, and that's how I'm leaving it considering the 100:1 ratio of oil.

    The packet mystery, someone said its because Canadian gallons are more, but its sold in USA. Also the site has no information posted on what ratio to use. So who knows??? The 12 oz bottle dispenses 100:1.

    usflg Yayy I can use the bike running icon now!!!

    Oh and Opti is semi synthetic, and I like that. The petroleum base keep the
    engine juicy best!!! Synthetics burn off easier.

    So any advice on jetting appreciated. More of the part of how you figure out why it is necessary. Thanks..
     
  6. stinky

    stinky New Member

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    Oh mapbike, they call it enviro formula because its smoke free. It is the same stuff.
    Its the new green gas!!!

    Actually some guy came running out of the house and stopped me lol!!!
    He wanted to know where I got the kit bad!!!
    He thought it was a 4 stroke motor. I have a lot of sound deadening in the
    case covers. But my guess is when he did not see any smoke he figured 4 stroke.
     
  7. jauguston

    jauguston New Member

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    I live 12 miles fromOpti-2 headquarters in Blaine, WA. When they first introduced it they talked to a local popular hardware store that has a very diverse rental equipment fleet that had all different types and brands of two stroke equipment. They all seemed to have a different recommended oil mix and it was a PITA for them. The Opti-2 rep suggested they try their stuff in everything so they only had to deal with one mix. That was 13 years ago. They still use it and tell me they have never had a engine issue that was attributed to Opti-2. That convinced me when I built my bike.

    Jim
     
  8. mapbike

    mapbike Active Member

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    And bless all the little kids.... Amen

    Excellent product..... I do need to buy a bulk bottle though.

    Map
     
  9. stinky

    stinky New Member

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    Well I can attest that it runs pretty cool. I ran it around 3 miles. Shut it down a little, then started it and ran around my neighborhood.

    I shut it down and pedaled around, only around 1/4 mile at most.
    I reached down and touched my fins on engine, and tho hot, they were
    nowheres near as hot as when the sun is shining on a car down here!

    I could have kept my hand on it. I am running a 7 NKG plug, so that is a cool one. Where I live has tons of cross streets, so I so far am limited as to
    how long I can keep it full throttle. Prolly only like 10 to 20 seconds.

    Anyways it runs very cool, perhaps my 32 spoke hub keeps it from hyper revving like a 44 tooth tall one would.

    So the quote " Lower operating temperatures" seems to ring true!!

    I won't be touching the exhaust pipe however.......
     
  10. Jumpa

    Jumpa New Member

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    This seems like a proper thread to post a link to this pretty slick site I found "pun intended" http://www.csgnetwork.com/oilfuelcalc.html

    I like it because it will calculate 0.5 or 0.7 of a gallon to what ever ratio your seeking I used it to figure out how much oil I needed for 20 oz of fuel to get my desired 25:1 and no other calculate could do that so I hope someone else gets use from it like I did
     
  11. mapbike

    mapbike Active Member

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    Yep hats a good calculator, that site has been posted several times, pretty handy for a quick calculation.
    Map
     
  12. Jumpa

    Jumpa New Member

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    Just a side note, if anyone does use the above mentioned web site, and you need to get the ratio for say a quarter gallon, it wont work if you type in" ΒΌ " you would need to type in .25 or 0.25 and it will calculate that way

    While some may find the site as useful as teats on a bull , someone such as myself It is a god send for me because with 4 or 5 different bikes. I cant mix just one container for all the bikes. My wife seems to be missing her largest measuring cup also ..SHHHHH!!!

    I always seem to have 3 or 4 different motors at diff. stages of the break in process so i find this info priceless. I got so pissed off at the white/ clear premix bottle the one that has the 25:1 and 20:1 on the same line & the instructions on that bottle would confuse Sir Issac Newton.

    I know I must sound like a complete idiot but I really have been mixing fuel for years in chainsaws ,dirt bikes , water pumps ect.etc. however at 46 years old the damage done to the gray matter in the 80's is catching up to me.
     
  13. CTripps

    CTripps Active Member

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    Imperial gallons are larger, yes.

    1 US Gallon = 3.785 L = 133.23 fl. oz.
    1 Imp. Gallon = 4.546 L = 160 fl. oz.

    An imperial gallon is about 26.77 oz larger (761 mL).
     
  14. Toadmund

    Toadmund New Member

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    Going on tank #2, break in almost complete.
    I went 80:1 simply because my tank holds less than 2 litres and I would put in 0.5 of a packet.
    The motor purrs like a kitten and it was the cheapest engine ebay had.

    And I am happy to post on page 100!
     
  15. KenX

    KenX New Member

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    I don't know. !00:1 just doesn't sound right for longevity of the engine. IMHO.
     
  16. mapbike

    mapbike Active Member

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    How much longevity is enough?

    Several people here been mixing 100:1 for several years and there engines have outlasted many others who run much richer oil mixes.

    Its more about the quality of the oil than it is the amount of it, oils that have been thoroughly tested and proven to protect as well or better than other oils with using 1/3 as much doesnt scare me at all, but like everything else we all have our opinions and preferences, this debate has been a long running one and still it continues. ....lol!

    Map
     
  17. Groove

    Groove New Member

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    Just an update - some folks reported issues when converting to Opti-2 after breaking the engines in with conventional oil. I logged about 1000 miles on Valvoline conventional 2 cyle oil and then converted to 100:1 Opti-2 without any trouble. I don't notice much difference except less smoke. I do also add a small amount of castor oil to the blend..
     
  18. 2door

    2door Moderator
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    This debate will go on forever. I've said this before and I'll repeat it again.

    If you haven't tried Opti-2 your opinion is just that, an opinion, based on the old belief that more oil is better. Today's modern lubrication products are far superior to those available years ago. Even straight dino oils are not the same but are formulated for higher temperatures and stress because of modern engine requirements.

    To simply say that the 100:1 oil to fuel ratio is bad because, it "doesn't sound right" indicates to me that you have not researched the product or even read this entire thread to see what those who use it have said about their experience.

    There's an old maxim that applies here: "Don't knock it 'till you've tried it".

    Tom
     
  19. KenX

    KenX New Member

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    I'm just in the old mold. I'm sure it's good oil, but I'm hard set in my ways and I would never mix at this ratio.
     
  20. mapbike

    mapbike Active Member

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    I grew up with nothing but a 13" black &white TV in my parents house which was fine back then, but I recognized progress and now I have moved up to a much better 55" big screen color tv.

    Why sit and watch the 13" out dated black & white when you can enjoy the benefits of something so much better all the way around.....?

    Just the way I see it..... shrug

    Map
     

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