2T oil and mix ratios?

Discussion in 'Trials' started by Twin-shocker, Jun 24, 2012.

  1. Twin-shocker

    Twin-shocker Long timer

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    Motul 800 is a full synthetic pre mix oil, and perfect for trials use. Using this at 80:1 in an air cooled motor will cause no problems whatsoever, and several UK twin-shock championships have been won on air-cooled bike using this mix ratio.
    #21
  2. Ymirtrials

    Ymirtrials Adventurer

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    I'm running Opti-2 at 80:1 in my rev3, seems to run nice and clean. I'll likely start running the same in my Bultaco once I run out of the Belray h1-r that I'm using now.
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  3. Twin-shocker

    Twin-shocker Long timer

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    As long as you are running full synthetic pre mix only oil, 80:1 will work just fine in any air cooled trials motor. Provides better throttle response, cleaner running, and means a far longer time between servicing exhaust system.
    #23
  4. wb22rules

    wb22rules Bourbon Tester

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    I have been using the Maxima 927 oil at 80-1 since I got the bike earlier this year, do you think the M a better oil to use for a 2001 Gas Gas 321TXT ? I am using ethanol free 93 octane.
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  5. Twin-shocker

    Twin-shocker Long timer

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    If you are running at very lean mix ratios a fully synthetic pre-mix only product is a better choice than semi synthetic. However if your riding isnt likely to involve extreme conditions or extended WOF riding, then the semi synthetic isnt likely to cause any sort of problems. Main thing to remember if you are running a pre-mix bike, is to use pre-mix oil, and try to avoid using dual purpose oils intended for autolube use.
    #25
  6. machalooney

    machalooney Been here awhile

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    This.
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  7. Ymirtrials

    Ymirtrials Adventurer

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  8. Twin-shocker

    Twin-shocker Long timer

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    I would guess Opti-2 is semi synthetic, but it seems strange there is nothing to clarify this?
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  9. Ymirtrials

    Ymirtrials Adventurer

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    Does seem strange eh? I'm going to call the distributor next week and get the full scoop, who is also the local Beta dealer, he has been selling the stuff for years and I'm sure knows all there is to know about it.
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  10. Twin-shocker

    Twin-shocker Long timer

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    Many dealers sell dual purpose 2T oils for trials use, and I am not sure many are aware of the fact oils appropriate for autolube use, shouldnt be used at the same type of ratios that are OK for fully synthetics?

    Maybe better to start to use something like Motul 800, rather than rely on a product whose manufacturers provide no technical data about it whatsoever?
    #30
  11. Datan556

    Datan556 Adventurer

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    used yamalube in a 30:1 (30liters: 1liter) mix in yz250. Factory guys said its the safest way of riding. burns clean as well, others use it in Suzies and kawa's Kx. Its a pretty good oil, throttle response feels better, used a synthetic oil of a petrol comp, shite! 80:1? is that 'gallons' or liters?

    and it didnt blow a lot of smoke...
    #31
  12. Pete-NZ

    Pete-NZ Been here awhile

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    Yamalube are Valvoliine producs if the guy at the local
    Yamaha shop is to be beleaved.. Yamalube is someone
    ealse products rebranded..Yamaha don't make oils..

    Bellray MC1 is becoming hard to find now..even online..
    So I got some Moltul 800 premix lube..see how it go's
    #32
  13. Twin-shocker

    Twin-shocker Long timer

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    Motul 800 is a proper fully synthetic pre-mix only product, and is fine for trials use. However if you choose to run any more oil than 70:1, its maybe not that great an idea as fully syn doesnt burn as easy as semi or mineral, and exhaust system will get need servicing much more often.
    #33
  14. Twin-shocker

    Twin-shocker Long timer

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    "Well are you? How much is enough? What oil do I use?

    These are all questions that are commonly asked here. You may find many answers, Some old school, some conservative, some safe. Yet for the most part is seems that many tend to err on the old school rules here that no longer apply and in fact is is costing you money in both higher maintenance and wasted product.

    I will not even get into environmental concerns here, as it is a secondary issue, yet not forgotton.

    Now we are talking trials bikes here, mostly putting about, revving a bit on occasion, then you gotta doo the BIG hill and the bike starts smoking like a chimney! Why, you ask? Because it is fully loaded in the motor and exhaust with all the wasted oil that you have accumulated from the day, or more that has accumulated in there and may never get out really, just turns to grunge that stops up your mid box and muff because it does not move.

    It cannot because it is lacking in two respects, these being air Velocity, to which the motor has not maintained through large throttle openings during the ride, the average here being not over half throttle at best, and the other being Heat transferred into the exhaust under high engine loads such as the hillclimb(at half or more).

    Fact is that most simply do not even grt the bike into a mode of operation to use the oil that you put in! The rest as bogging waste!

    Now, I shall start off by example of the fact that our(Sherco) Pro riders here have used the mix of 80:1 of high quality synthetic for over a decade now I believe, and without issue.Now these lads do get some revs in the bikes on a regular basis and tend to keep some heat in the motor and exhaust. Do you ride at top level? Most do not even come close!

    Ok, so I can be like them and run 80:1!!! Well, y'hat is a start for some! Mind you we are not doing consistant high revs and road work here at speeds. Just normal passages between sections and such with some hills and vals and some hard running, yet even hard runs up long hills and things are fine.

    You got any long runds up a mountainside? Few again!

    Comment as you will. I shall get back on this later!"


    Above posted on a UK trials chat forum, and is relatively accurate other than the fact the writer does not point out its not that great an idea to use dual purpose (pre-mix-autolube) "fully synthetic" oils at very lean mix ratios, so its a post which simply adds to the very obvious confusion over 2T oils, and will mean most of those running too much oil for best possible running, are likely to continue to do so.
    #34
  15. r2wtrials

    r2wtrials Been here awhile

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    I use Rock oil strawberry 2 :) yes, it smells of strawberries!! Not sure if you get it over in the USA, but Ipone also did a strawberry smelling one a while back.

    I have used it for years, at 75:1 in my Beta's, 100:1 in GasGas' and 50:1 in my SWM.. it is synthetic.

    The reason GasGas pro's run at 100:1 is that unlike most others they don't use the oil in the fuel to lubricate the crank bearings. They run in the gearbox oil so it is more important to use a good oil in there and change it often on the Pro's.
    #35
  16. 550SENTA

    550SENTA Banned

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  17. Twin-shocker

    Twin-shocker Long timer

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    Will all the smoke mean that we wont be able to see your bike when you finally post pics?
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  18. 550SENTA

    550SENTA Banned

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  19. ragtoplvr

    ragtoplvr Long timer

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    Try my old lawnboy mower (1956 model) at 16 to one. It will live at 24 to one but no less. It has plain bearings. You can not lean it much. At least you do not get mosquito bit. It did stop the homeowners association from pestering me about mowing every 4 days.

    The point is, most of us do not know what other things the mfg does to an engine to use lean oil mixtures. If it originally was listed at 50 to one, 32 to one or whatever, you do not know if it is compatible with 100 to 1 synthetic. Not worth it to me.

    Rod
    #39
  20. 550SENTA

    550SENTA Banned

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