2 Cycle Oils

[2fun]

Originally posted by Rockey
From what I have read, 2 smokes make best power at 18:1. I really don't see the point in mixing 100:1 at all. You spend the same money for the oil as at 32:1, but there is less of it to protect bearings, lube piston, seal rings, etc etc. Your bearings won't last as long, there will be more wear on the engine. You will spend more money down the road.

I'll stick to my nice and polluting 26:1 ratio w/ MX2t.

I agree to not going to a ratio as lean as 100:1, but with the newer oils (synthetics), I feel that I am getting as good or better protection at 50:1 than I did at 32:1 with the older non-synthetic oils.

I'm not sure though what you mean by spending the same amount of money for the oil as at 32:1?

If you are running less oil, you are actually stretching the oil out farther, thereby spending less on oil than you would have at the 32:1, or did I misunderstand you?

One of the things I like about running the Amsoil 2000 fully synthetic (50:1), is that (I feel) I get better protection than the Golden spectro semi-synthetic mixed at 40:1

Although the Amsoil is more expensive oz for oz, I actually wind up spending LESS overall for the oil than I did when using the Golden Spectro semi synthetic.

Therefore I don't spend the same amount of money on oil. I actually spend less.

[Rockey]

Originally posted by 2fun

A. I agree to not going to a ratio as lean as 100:1, but with the newer oils (synthetics), I feel that I am getting as good or better protection at 50:1 than I did at 32:1 with the older non-synthetic oils. One of the things I like about running the Amsoil 2000 fully synthetic (50:1), is that (I feel) I get better protection than the Golden spectro semi-synthetic mixed at 40:1

B. I'm not sure though what you mean by spending the same amount of money for the oil as at 32:1?
If you are running less oil, you are actually stretching the oil out farther, thereby spending less on oil than you would have at the 32:1, or did I misunderstand you?

Let me try to explain myself a little better,

A. I also agree with you that you are getting better protection at 50:1 w/ synthetic than with GS non syn. at 40:1. I run fully synthetic Mobil MX2t, and at 32:1 or 26:1 or whatever im using depending on the ride, I feel I get much better protection than running the amsoil at 100:1. At 50:1 with the Amsoil 100:1 oil, you probably get the same as I do protectionwise.

B. What I meant by saving money was, I get MX2T by the case, it comes out to about $2.75 a bottle. For the Amsoil 100:1, it sells locally for about $7 a bottle. The Amsoil would get me through about 4 1/2 gallons of gas at 40:1 (the lowest I would ever go on a 125, on a 250 I would run 50:1). The MX2T, gets me through 3 1/2 gallons on a bottle. So moneywise, I save.

But at 50:1, that Amsoil 100:1 oil probably is a great lubricant. Im not against it, just the 100:1 ratio.

P.S-I used to use that Golden Spectro stuff too, I didn't like at at all. It gummed up PV's and has bad carbon build up on the piston. Plus at $5 a bottle going through 3 gallons a bottle, I passed on it.

[Dell30rb]

man, I think I am going to try some of that amsoil at 80:1, sounds like a plan to me.

Rockey, have faith in the oil my friend

[Madman393]

One thing to remember about two cycle oil--it is about the best octane booster you can come up with as it reduces combustion chamber temps, detonation and the like. Therefore, when you alter your ratio, you may lose power through pre-ignition, detonation, etc.. There is a diminishing return and I would never go above 50 to 1 no matter what the oil is on MX bikes and that would be on a big bore at that.

Put it to 32:1, 40:1 or 44:1 depending on your displacement and jet for it. Then leave it alone and enjoy!

[KTM250rm393]

I agree with Tyler,

High revving engines like the 125 should stick to 32:1. Bigger bores like 250 and above can run at a higher ratio because their rpms are slower.

[HiG4s]

Originally posted by KTM250rm
I agree with Tyler,

High revving engines like the 125 should stick to 32:1. Bigger bores like 250 and above can run at a higher ratio because their rpms are slower.

actually there is more to it than that.

What lubes the crank in a two stroke is the oil that falls out of the mix and ends up in the bottom of the engine. The higher the mix ratio the less available to end up on the crank. The bigger the engine the more mix runs through the engine the more oil to end up in the bottom per given mix ratio.

[Woody_YZF]

Down at my shop I sell Klotz R50 more than anything and most people run it at 40:1. A close second is the Ipone 2 stroke oil. I personally like it because it smells so good (strawberry).

[2fun]

Originally posted by Rockey
Let me try to explain myself a little better,

A. I also agree with you that you are getting better protection at 50:1 w/ synthetic than with GS non syn. at 40:1. I run fully synthetic Mobil MX2t, and at 32:1 or 26:1 or whatever im using depending on the ride, I feel I get much better protection than running the amsoil at 100:1. At 50:1 with the Amsoil 100:1 oil, you probably get the same as I do protectionwise.

B. What I meant by saving money was, I get MX2T by the case, it comes out to about $2.75 a bottle. For the Amsoil 100:1, it sells locally for about $7 a bottle. The Amsoil would get me through about 4 1/2 gallons of gas at 40:1 (the lowest I would ever go on a 125, on a 250 I would run 50:1). The MX2T, gets me through 3 1/2 gallons on a bottle. So moneywise, I save.

But at 50:1, that Amsoil 100:1 oil probably is a great lubricant. Im not against it, just the 100:1 ratio.

P.S-I used to use that Golden Spectro stuff too, I didn't like at at all. It gummed up PV's and has bad carbon build up on the piston. Plus at $5 a bottle going through 3 gallons a bottle, I passed on it.

That makes sense!

[hardlydangerous]

I have never been a fan of ratios higher then 50:1 either.
Really what are the benefits or running your engine on such little amount of oil?

Years ago we had a customer with a 440 liquid arctic cat that was continuously in our shop. We would rebuild it, within a month or two it was blown up, He always complained of the jetting and at tear down time the engine usually had signs or pre-ignition and or detonation.

We could never figure it out. On a fresh engine (Amsoil 40:1) it ran mint, plugs checked perfect, water temps good.
With in a month it was blown up.
We found out later he had been using an oil (not amsoil) at 100:1

My opinion is just because an engine can run with an oil ratio mixed at 100:1 does not mean that it's best for it. Sure at synthetic at 100:1 may provide the same lubrication as a cheapy-do oil at 50:1 and not void a warranty but that good synthetic mixed at 50:1 will provide twice the lubrication.
Run the heaviest oil ratio you can and not foul plug continuously... and for Gods sake re-jet for the different ratios.

[Keetoman393]

I only ran 100:1 in my Trials bikes because the factory recommended it. In my other 2-smokes I ran 40:1

[Madman393]

Originally posted by hardlydangerous
I have never been a fan of ratios higher then 50:1 either.
Really what are the benefits or running your engine on such little amount of oil?

Years ago we had a customer with a 440 liquid arctic cat that was continuously in our shop. We would rebuild it, within a month or two it was blown up, He always complained of the jetting and at tear down time the engine usually had signs or pre-ignition and or detonation.

We could never figure it out. On a fresh engine (Amsoil 40:1) it ran mint, plugs checked perfect, water temps good.
With in a month it was blown up.
We found out later he had been using an oil (not amsoil) at 100:1

My opinion is just because an engine can run with an oil ratio mixed at 100:1 does not mean that it's best for it. Sure at synthetic at 100:1 may provide the same lubrication as a cheapy-do oil at 50:1 and not void a warranty but that good synthetic mixed at 50:1 will provide twice the lubrication.
Run the heaviest oil ratio you can and not foul plug continuously... and for Gods sake re-jet for the different ratios.

This amplifies my point on the oil being a octane booster. Although the oil can lubricate at 100 to 1, the compression ratio of the engine and the jetting is dependent on a much lower ratio, leading to elevated temps, detonation and blown up engines.

[Rockey]

It can lubricate, but not well. Plus you lose power.

So you lose HP, Your engine is much less reliable, You still pay the same price.

Gee, I think I will start mixing 100:1 TODAY! :

[2fun]

Thought I would bump this with the current discussions going on about oils and mixtures.

[MATTXR250R]

GREAT INFO...I will however stick with 32:1 in my CR250

[jason33]

klotz-40:1-pump fuel-
klotz is great oil-it burns clean,and removes carbon build up-
possibly 32:1 with race fuel- race gas burns cleaner ,and better,always check the plug to make sure your not running too lean

[05YZ250]

Klotz Supertechniplate 32:1 here running strong!

[Rm rider 69]

i run Red-line with a 42:1 in my Rm 125, i ride very hard and have no issues with it at all

[Squigs]

Klotz R50 at 40:1.

[MXPUNX]

silcoline 32:1

motrex 32:1

[oppo]

Originally Posted by KTM250rm393

The only disadvantage is you can only find it at Auto Zone auto parts.

dont see the disadvantage, auto zones are everywhere, way closer and easier to find than bike shops. In my city anyways