Two Stroke Motocross
Two Stroke Motocross Forum => Technical => Topic started by: factoryX on April 18, 2012, 05:21:54 PM
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http://www.csgnetwork.com/oilfuelcalc.html
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I don't ride as much as I'd like, so for me its easier to mix a gallon of fuel at a time. To make my life easy (plus I'm lazy), I have a small bottle I'll pour the two stroke oil into. On the small bottle I've marked lines for one, two, and three US gallons. For the fuel I use an old empty jug that previously held window washer fluid, (one US gallon). I pour one gallon of gas into the jug, and add the appropiate oil. I run approx 50:1 (approx 2.5 oz), so my preset lines on my two stroke oil bottle and always working with one gallon of fuel at a time ensures a consistent mixture.
Just my $.02... that and $3.00 will get you a redbull..
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I like mine just fine. I mix 4 gal of VP110 to 10 Gal 93 pump fuel. That lasts the boy about a day and a half.
I use the Maxima Ratio cup.
For some reason I can't post a pic using the img codes.
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I mix about two gallons every so often, but the only gas tanks I have to mix in are each 1 gallon, so it works out to just measure a gallon each
But when I get a 5 gallon jug, this is a great site to use.
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Thank Christ for the metric system.....all this gallons, ounces, pints.......and whatever else.........i just mix 600 ml oil to 20 litres of juice.......nice n easy
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Thank Christ for the metric system.....all this gallons, ounces, pints.......and whatever else.........i just mix 600 ml oil to 20 litres of juice.......nice n easy 
Exactly what I was thinking.
Eventually Americans will figure it out on their own, and convert despite their government.
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128 ounces = 1 US gallon
128 divided by 4 is 32, so 20oz of oil for 5 gallons for 32:1, 16oz for 40:1, 12.8oz for 50:1.
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128 ounces = 1 US gallon
128 divided by 4 is 32, so 20oz of oil for 5 gallons for 32:1, 16oz for 40:1, 12.8oz for 50:1.
Gobble gook.
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128 ounces = 1 US gallon
128 divided by 4 is 32, so 20oz of oil for 5 gallons for 32:1, 16oz for 40:1, 12.8oz for 50:1.
Notice it was edited. It took him 4 tries before he got it right
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Not really, kept adding to it.

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128 ounces = 1 US gallon
128 divided by 4 is 32, so 20oz of oil for 5 gallons for 32:1, 16oz for 40:1, 12.8oz for 50:1.
still confused......
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Hey anybody out there using Castrol R30 ?
I have a CR250 R6,anybody had issues with plug fouling ?
Open to suggestions about oil ratio,and heat range of plug
Is 32:1 too much oil ? Any body tried 40:1 ? I have gone from a 9 to an 8 plug.
It seems to run a bit cleaner. Smells great.
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As long as your jetting is good you shouldn't foul plugs.
Some of the CR guys here can tell you about if 40:1 is ok.
Depends how you ride.
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Thank Christ for the metric system.....all this gallons, ounces, pints.......and whatever else.........i just mix 600 ml oil to 20 litres of juice.......nice n easy 
Thats exactly my ratio too. It works awesomely, great smell and its pretty good on the plugs. I'm running motul full synthetic
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i have an app for my phone. i can choose how many litres or gallons and it tells me how much oil. easy as that
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There really is an app for everything
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I believe there is an app on android market that will quite literally tell you if you are fat or not
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I believe there is an app on android market that will quite literally tell you if you are fat or not
WTF. 
I don't need any electronic wizardry to tell if someone is a fat ****er.
How stupid has the world become.
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Thank Christ for the metric system.....all this gallons, ounces, pints.......and whatever else.........i just mix 600 ml oil to 20 litres of juice.......nice n easy 
Thats exactly my ratio too. It works awesomely, great smell and its pretty good on the plugs. I'm running motul full synthetic
You realize your oil mixture has nothing to do with plugs lasting or fouling.
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Not what I've been taught. I also run it mid range rpm so I figure a rich mixture will foul the plug quicker? Am I wrong?
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Jetting and air/fuel screw plays a huge role in plug fouling
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That I did know. I was always told having a very rich mixture will screw your plugs over. I think my jetting might be a bit off actually...
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And that is a lie.You can jet for 20:1 and not foul plugs..
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I use a ratio right, mixed a gal. of 110 leaded sunday. To ride the 04 cr144 and 06 cr125 back to back, to make a decission on which 1 I,m selling. I was thinking the 144 at 1st, I rode it with the 03 KX 125 HGS BUD pipe, then the 06. Then put the PC pipe on the 144, huge diff. in performance, the PC hits quicker, then pulls very hard, a eye blurring rush of power. The KX pipe on the 06, ran leaner than the stock pipe, I was shocked by the lowend snap, harder hit the pulling much harder with 2,000 more rmp, pulling the whole way. That same pipe on the 144, ran flat, but had great mid pull with 2k plus more rpm. The stroker crank slows response down, so a pc pipe with better snap is a good fit for the track. PS alot of hours fabing the kx pipe to work on a cr.
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bit of a useless app.
I just use my brain to work it out when filling up 
your brain is there for a reason, the term use it or loose it really does apply...
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And that is a lie.You can jet for 20:1 and not foul plugs..
Wrong. What I was taught was not a lie, but a mistake. There is a world of difference.
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bit of a useless app.
I just use my brain to work it out when filling up 
your brain is there for a reason, the term use it or loose it really does apply...
well said.....it can be a strain for me though sometimes using my brain, its never worked very well 
i think i got a dodgy one
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bit of a useless app.
I just use my brain to work it out when filling up 
your brain is there for a reason, the term use it or loose it really does apply...
well said.....it can be a strain for me though sometimes using my brain, its never worked very well 
i think i got a dodgy one
has your brain warranty period lapsed yet?
could be the way to go if dissatisfied 
jks