What 2 stroke oil ratio do you run in your 85 86 250r

[Bill]

I have an 85 honda 250r . I know it says on it mix ratio is 20 to 1 but i usally run golden spectro in my other machines and didnt know if it should be mixed different with the newer oil style what ratio does everyone else run ? Just wondering. Also what 2 stroke oil do you recomend ?

[FastZ28]

I use Golden Spectro in my 85 250R. I have run it at 50:1 with no problems but prefer to use it at 44:1. I just raced it in Ohio at the Summit Indoors mx and it ran great. I would recomend 44:1 if you do alot of WOT on dirt roads and such or mx. For trail riding I think 50:1 would be fine.

[jeffatc250r]

Klotz techniplate in the winter, or klotz benol in the summer at 32;1 I run the same stuff in everything, including my saws for work and have never had a problem.

[DixiePlowboy]

Klotz Super Techniplate @ 32:1

[peter250r]

i was told 25:1 this equates to 40mL oil to 1 litre fuel

[Kintore]

Amsoil interceptor 40-1 year round.

[Tecate 50]

40:1 year round....

[keister]

I have had my 85 250R for one year and have always ran 32:1. Blue Marble. Last weekend, a couple knowledgeable people mentioned to me that judging my the amount of smoke out of my pipe, I should start mixing 40:1.

[audioworks04]

44:1 AMS Oil Interceptor all day any day. Love it burns very clean.

[harryredtrike]

yam oil at 32-1,85 r also

[Tecate 50]

I used Klotz Techniplate this year 40:1. Had some problems with it seperating from the fuel and gumming up my Carb. Switching to Yamaha 2r in the next few weeks. Its been around for ever and have never heard a bad thing about it! Gonna miss the sweet smell of Klotz though......lol!

[factoryX]

klots R-50 synthetic 40-1.

[Russell 350X]

Klotz R-50 at 50:1

[JohnR.]

Honda HP2 at 40:1 (i.e. one bottle to 5 gallons). Never have to worry about it separating or any of that stuff. Just dump it in and go. I've got YEARS of wide open minute long top end lake rides on my piston and its still working great. Oh, and the price is reasonable too. I believe one bottle is $7.00 so basically, $7.00 worth treats five gallons.

[NINJA]

Klotz R50 at 32:1. When in doubt, 32:1 will never get you in trouble. Been running it for years and never had a problem. Contrary to what most people believe, more oil makes more power and your crank bearings will last longer. I don't care if it smokes more, that's one of the endearing qualities of having a 2-stroke.

[atchonda]

I just use Walmart Castrol mix'er thick and bring spare plugs

[Tecate 50]

More oil makes more power.....Im not doughting you, but thats a new one for me! My theory was the leaner the meaner!

[DixiePlowboy]

More oil makes more power.....Im not doughting you, but thats a new one for me! My theory was the leaner the meaner!
Leaner air/fuel mixture(to a point), is the "leaner-meaner" quote.

Less friction is more power, also. I've seen in depth write-ups of the power output of a given engine measured on a dyno, using the same oil at different ratios. You'd be surprised at the results. Some actually produced more HP at 16:1 than 40:1.

Don't ask me to find it, as it's been over a year since I read it, but I'll stick my neck out and mention it just the same.

[JohnR.]

Actually, more oil does result in a leaner air/fuel ratio but I don't think adding more oil is going to make any more power. Modern oils have made tremendous advances over the old oils of the 80's and I don't see any reason to add more oil than the oil manufacturer recommends. I'm with you Tecate-50, a good quality oil mixed at a higher ratio is better. It will still offer more than sufficient protection for the cylinder wall and bearings and not gum up the combustion chamber, pipe, and silencer with oil residue.

John

[DixiePlowboy]

The same write up, and another or two suggested that the effect of a richer fuel/oil mixture had such a minute effect on the air/fuel mixture that it wasn't worth consideration. I forget how many mixture ratios you had to jump up or down to effect a 1% change in the air/fuel mixture.....but it was several.

Some of the "modern" oils we're using today are oils from the day. Some of those older oils work just as well as the newest oils. problem is, we can't ever really get a consensus on what oils are good and what oils are not....let alone what ratios are best, because everyone else's experience and subsequent opinion is purely subjective.

I used Castrol 2-cycle motorcycle oil for years(back in the '80's before I switched to Klotz) mixed at 20:1. Both machines actually ran years on rings and a single plug each....no joke. And back then I rode nearly every day...not just once in awhile. Go figure.

I used "modern" maxima 927 and went through many plugs and had excessive gumming and carbon. Cold temps and race gas/aviation?....shake well! Then shake again.

I've used Klotz ST for longer than I can remember with excellent results compared to maxima. No excessive carbon buildup, NO seperation issues whatsoever...even in freezing temps.

My only experience with Amsoil was buying more plugs and changing back to Klotz.

The best I can come up with is; that if it works for you, run it....and don't worry what anyone else thinks.

[NINJA]

Leaner air/fuel mixture(to a point), is the "leaner-meaner" quote.

Less friction is more power, also. I've seen in depth write-ups of the power output of a given engine measured on a dyno, using the same oil at different ratios. You'd be surprised at the results. Some actually produced more HP at 16:1 than 40:1.

Don't ask me to find it, as it's been over a year since I read it, but I'll stick my neck out and mention it just the same.

You are absolutely correct on this. Back in 2000-2001 at MMI I had ready access to a dyno. I also had my 2nd 86R. The maximum power output on that particular trike was at an 18:1 mix. I was using, you guessed it, Klotz R50. Another benefit worth noting is the fact that the engine consistently showed lower operating temps.

I see more lower end seizures nowadays then I used to, my observation has been that it's the customers that run 50:1-70:1 mix ratios with the new synthetics. Everyone seems to be on the "smoke is bad" bandwagon lately, IT'S A 2-STROKE GUYS! Oh well, keeps me in business.
I've said all I've needed to say. It's like trying to tell people they're wasting their money at the gas pump by filling up with premium when their car doesn't call for it. They'll swear to God it runs better, placebo effect is a helluva thing.

[DixiePlowboy]

I was using, you guessed it, Klotz R50.
.

Did you compare R50 against other oils, or just the mix ratios with that oil? The reason I ask was to see if there was a measurable power difference between the two oils(super techniplate vs. R50, specifically) at a given ratio.

I use Super Techniplate instead of R50 because of the(possibly imagined but claimed by Klotz-) added film strength of the 20% Benol castor blended in....not worrying about power valves sticking on an R. Do you see anything at work(or at MMI) to support or contradict that rationale?

[Bill]

Thanks for all the info !!

[factoryX]

hey actually klots r-50 has shown higher hp at the dyno than most other two stroke oils.

[Tbcoplin]

I ran golden spectro in my cr 250 dirtbike and mixed it 50:1 and had great results. I run yamalube 2r in my 3 wheelers @ 24-28:1. Remember, it's cheaper to change plugs that rebuilds. I was under the impression that more oil made the motor more sluggish. It takes a little longer to clean it out upon start up, but trailprotrailpro engine will last much longer.

[250rAL]

Bel-Ray MC-1 at 50:1 for the last 20 years. I've freshened the cylinder but the bottom end is untouched.

[NINJA]

Did you compare R50 against other oils, or just the mix ratios with that oil? The reason I ask was to see if there was a measurable power difference between the two oils(super techniplate vs. R50, specifically) at a given ratio.

I use Super Techniplate instead of R50 because of the(possibly imagined but claimed by Klotz-) added film strength of the 20% Benol castor blended in....not worrying about power valves sticking on an R. Do you see anything at work(or at MMI) to support or contradict that rationale?
I ran it up against Golden Spectro but not Klotz SP. The results from the Golden Spectro were very very close to the R50. I've run Klotz SP in the past plenty of times too, no noticeable differences be it seat O' the pants or teardown from the R50. Both are excellent oils.

One note of caution though, Klotz SP can be corrosive on certain metal surfaces if left to sit for extended periods of time. This is mainly an issue with snowmobiles that sit unused for a while.

[JohnR.]

Some good info in this thread. You have me thinking about possibly switching it up to a little more oil in my fuel. I know 2 strokes are supposed to smoke but I don't want to ride around looking like a crop duster either. :)

[DixiePlowboy]

Some good info in this thread. You have me thinking about possibly switching it up to a little more oil in my fuel. I know 2 strokes are supposed to smoke but I don't want to ride around looking like a crop duster either. :)

I understand that. I guess with as bad luck as I've had in the last few years, I see things the opposite. If I don't see some blue smoke behind me I start worrying...lol, and I'm always watching for white(coolant) or grey(transmission oil) smoke. I don't want clouds behind me either, but I don't want to open the motor up to build more often than I have to. Besides, someone's got to kill the 'skeeters:)

I ran 20:1 for years, but switched to 32:1 back in the '90s somewhere. That's as lean a fuel/oil mix as I'll personally go.

[NINJA]

Some good info in this thread. You have me thinking about possibly switching it up to a little more oil in my fuel. I know 2 strokes are supposed to smoke but I don't want to ride around looking like a crop duster either. :)

I like looking like a crop duster, it keeps those pesky 4-strokes away.

Honestly, the R50 at 32:1 doesn't smoke very much at all.

[hoser]

More oil makes more power.....Im not doughting you, but thats a new one for me! My theory was the leaner the meaner!

Search the web their is tech papers that back it up I think the one I read was written by McCulloch the people that make chain saws and the other place I read it was either in Jennings or Blairs two stroke books.

I ran Golden Spectro in everything I own 2 stroke at 32:1 great oil, switched to Amsoil after Spectro doubled the price of their oils, could not find anybody to give a discount on Spectro even if I bought 5 gallons at a time, I buy the Amsoil 4 gallon jugs at a time.


Edit: here download Bell's book start reading on page 166, your toy run as little or as much oil and you feel you need to run.

http://rds.yahoo.com/_ylt=A0geu7tGw5JLonIAqGVXNyoA;_ylu=X3oDMTEzZTg4ZWt mBHNlYwNzcgRwb3MDMQRjb2xvA2FjMgR2dGlkA1FTU0hfMTA0/SIG=13mpq9aqo/EXP=1267995846/**http%3a//www.kreidler.nl/artikelen/performance-tuning-graham-bell/performance-tuning-graham-bell.pdf

[JohnR.]

32:1 definitely isn't too smokey, especially with good oil. I may try going that route once my HP2 is gone.

[Tecate 50]

Interesting stuff.....thanks! I never had any problems with Klotz other than the seperation deal with it clogging my carb......my trike sat for a couple of weeks and it clogged the jets. I thought it may have been a fluke, but it has happned more than once. My buddy Ed runs the same stuff and has never had a problem with his! I would rather just go with a Yamaha or Honda line oil 32:1 or 40:1 and call it a day!

[swampthang]

Ok digging up an old oil thread. I needed to get some more premix out for my 85 R the previous owner just told me he was running Klotz. I have been trying to to some research on klotz and got confused. While at the bike shop today I grabbed the only Klotz oil they had it is the Benol. From what I read this if for a constant higher rpm engine. I don't ride my R much and it sits for prolly a month or so at a time. I use it for trail ridding and field ripping. Did I screw up and grap the wrong oil? I dont want to gum anything up.