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#466313 - 09/17/03 06:25 AM Re: What is the favorite 2 cycle motorcycle oil
blano Offline


Registered: 12/24/02
Posts: 687
Loc: Canada
"On a motorcycle forum there is a guy that says Mobil MX2T is 25% Kerosene and that Kerosene reduces octane."
Non sense. MX2T des conatin some stoddard solvent as a diluent, but not 25%. Almost all two cycle oils contain some stoddard solvent. TCW3 oils contain a ton of it.

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#466314 - 09/17/03 06:44 AM Re: What is the favorite 2 cycle motorcycle oil
blano Offline


Registered: 12/24/02
Posts: 687
Loc: Canada
"Just curious if anybody else is using this and what they think. Thanks"
It burns dirty as **** and is almost worthless for anyhting remotly recreational, but it will prevent seizure in the most extreme racing conditions.

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#466315 - 09/17/03 11:06 PM Re: What is the favorite 2 cycle motorcycle oil
JimE Offline


Registered: 09/16/03
Posts: 2
Loc: Santa Cruz Mountains
Not totally useless [Big Grin]

I mix up only what I need as I go but always seem to have a few pounds left over after the race weekend. Not being one to waste good (and expensive) fuel, I run it in my chainsaw which is a Stihl 036 Pro series with 24" bar. With 112 Octane oxygenated fuel and Castrol A747 that thing ROCKS! [freaknout]

Seriously though, it is race application specific. When you push a 125 to 44hp and beyond things get strange. The reason I use it at the track is because nobody there can tell me they have ever siezed on it. Many people (who have siezed a lot) run it for that reason. It's **** expensive and I was wondering if anybody had founs an off track use for it.

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#466316 - 09/19/03 12:52 AM Re: What is the favorite 2 cycle motorcycle oil
KX 455 Offline


Registered: 08/06/03
Posts: 122
Loc: usa
I just ripped apart my top end last week.(03kx250) I put 40 hrs with the mx2t 36:1 av gas 100LL. The powervalves were very easy to strip and did not take much to clean up. The piston had usual led deposits on it from the av gas. The head was spotless, the crank halves had some rust starting to form. I know what the crank looked like before the 40 hrs and it did not look like that.My bike sits for no more than 5 day's if that. The crank was also dry compared to maxima 927 at 36:1 AND AMSOIL 50:1. I was bearly picking up anything when rotating, definetly did not compare to the 927 and amsoil.I did see oil laying in between the cases,but not enough oil pick up on the halves for my taste. I lost .001 rod side clearance .019 before.020 after.The 927 and amsoil never lost me that much clearance in such short of time .020 is still well within spec,but I feel more confident with the 927 and amsoil mx2t is not for me. The 927 would be my oil of choice for lubrication,but the powervalves can be a handful when stripping,the 927 lubricates and lubricates well. The kx cylinder design has a huge intake port and a bridge that the ring gap rides between. I get a few vertical scratches(normal) on the intake side of the piston with other oils because of the design,the 927 just about eliminates the scratches or scuffing . Of course their is a down side the hard charcoal carbon on the main valve. I was looking on KLOTZ website I like the way they give some of the properties for each of their oil and they have a numbering scale (lubricity,clean,smoke,antirust)for each of thier oils. They put it right out there I kinda of respect that.The klotz r 50 really caught my eye flashpoint is 400 very comparable to 927 and their benol and super techniplate. It also looks like it burns very clean,and is a excellent antirust.I am going to try it out, my first objective with a 2 stroke oil is lubrication then cleanliness. I do not gauge a oil on how clean my power valves are or how clean it is,but if I can get great lubricity with the r 50 and not struggle with the power valves it will be a winner.Their super tehniplate looks like a winner to except for oxidation. A side note I just did a motor rebuild on a 01 cr 125 original top end was still in it (ARGHHHHHHHHH) the bike was used for hare scrambles b rider ring end gap and piston were well out of spec,but the cylinder was below the service limit. Of course their was blow-by and the rings and piston were shot,but it looked very good in their I was very susprised.He has been running belray H1r since day one. Klotz R 50 looks like it will fit my application.

Keith.
00,03 KX250.
by all means, post your links in our links section located off the main page. Thanks.

[ September 25, 2003, 07:33 AM: Message edited by: BOBISTHEOILGUY ]

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#466317 - 09/22/03 06:49 AM Re: What is the favorite 2 cycle motorcycle oil
Cujet Offline


Registered: 02/15/03
Posts: 3838
Loc: Jupiter, Florida
KX, 927 is a good oil and I have used it with good results. However I have no corrosion issues with the Mobil MX2t. Redline Racing oil promoted corrosion.

In addition, I am not convinced that there is a large difference in ring wear or overall engine life between quality oils. My experience has shown that for my riding conditions, which are not race conditions, MX2t works best for me.

Chris

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#466318 - 09/22/03 09:28 AM Re: What is the favorite 2 cycle motorcycle oil
KX 455 Offline


Registered: 08/06/03
Posts: 122
Loc: usa
Chris I agree mobil mx2t is not a bad oil,but for my application it is not for me,I did however find corrosion starting to form nothing alarming,but it was present.Red line causing corrosion! is not the first time I heard that either. The 15/50 or the mx4t in the tranny showed excellent results and performance. I am a big believer in those 2 oils for the tranny.I am trying the delvac 1300s right now Just trying to save a little money,I drop my oil 2 rides anyway.I am going with the klotz r50 for premix. If that does not work out it will be amsoil.
SEE YA!!!

Keith,
00,03KX250

[ September 23, 2003, 12:34 AM: Message edited by: KX 455 ]

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#466319 - 09/23/03 12:19 AM Re: What is the favorite 2 cycle motorcycle oil
blano Offline


Registered: 12/24/02
Posts: 687
Loc: Canada
KX, i dont think mx2t was responsible for your corrosion problems. I stored a older rm250 last winter by propping it up in the corner of my garage. When I re ringed this spring there was no rust on the crank lobes or the cast iron sleeved cylinder. I know you are high on 927, but have you considered the issues with castor and corrosion? FWIW the scoring you are seeing on the intake side of the piston can be caused by dirt and a poor port chamfer. I had a 00 cr 250 which has a huge intake port as well and I never had a problem with scoring using mx2t. BTW youR comments on cleanliness are off a bit as cleanliness has a great influence on ring life. Carbon in the ring grooves will cause the ring to wear more rapidly.

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#466320 - 09/23/03 03:36 AM Re: What is the favorite 2 cycle motorcycle oil
userfriendly Offline


Registered: 06/03/03
Posts: 953
Loc: Kamloops B.C. Canada
I stopped reading when I got to the 100LL aviation gas part.

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#466321 - 09/23/03 05:19 AM Re: What is the favorite 2 cycle motorcycle oil
KX 455 Offline


Registered: 08/06/03
Posts: 122
Loc: usa
Blano Mobil mx2t did cause slight corrosion,the motor was apart with the 927 without that issue.Like I said mx2t is not for me .. As for port chamfer and or dirt entering that is not the case. My AIRBOOT TO FILTER CAGE IS SEALED LIKE FORT KNOX. As for port chamfer they all have a nice chamfer with a rubber cratex . 927 is a excellent anti corrosion oil. 927 is not all castor ,but also synthetic with a additive package for corrosion. Now blendzall I definetly would not recommend that for storage.Mx2t is not a bad oil as I said,but for hard riding or racing their is better.

Userfriendly I see you you do not consider av gas for a great alternative for race gas. For 2.35 a gallon you have a octane rating of 102.5 good detonation control for applied compression ratio. Excellent jetting characteristics(very defined when a jetting change is made,easy to jet)av gas is Highly regulated, is very consistent and it will stay a year. Considering that pump fuel is basically junk and so inconsistent. average race fuel for my application is 6.00 a gallon and i have seen bad batches of race fuel. Maybe you need to rethink your comment.

Keith,
00,03KX250

[ September 23, 2003, 08:52 PM: Message edited by: KX 455 ]

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#466322 - 09/23/03 06:08 AM Re: What is the favorite 2 cycle motorcycle oil
userfriendly Offline


Registered: 06/03/03
Posts: 953
Loc: Kamloops B.C. Canada
We have very good pump gasoline available in Canada from several refiners.
Are fuels not blended for their intended applications in the USA?
Such as an AV gasoline blended with a 2200 RPM,
5 inch bore, four stroke, air cooled engine in mind?

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#466323 - 09/23/03 08:25 AM Re: What is the favorite 2 cycle motorcycle oil
blano Offline


Registered: 12/24/02
Posts: 687
Loc: Canada
Kx455, you have no evidance to support your claims other than "it didnt happen with 927. Also av gas isnt 102 r/m 2 octane and it sucks for mx bike applications because it has a high low end boiling point. This provides for lazy throttle response.

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#466324 - 09/23/03 09:02 AM Re: What is the favorite 2 cycle motorcycle oil
KX 455 Offline


Registered: 08/06/03
Posts: 122
Loc: usa
quote:
Originally posted by blano:
Kx455, you have no evidance to support your claims other than "it didnt happen with 927. Also av gas isnt 102 r/m 2 octane and it sucks for mx bike applications because it has a high low end boiling point. This provides for lazy throttle response.

......

I am sorry if I offended you blano, because I do not like the results I examined with mx2t.What more results do you want (tear down inspection) I know my motors inside out and if I like or dislike a certain oil I will be honest about it. I have nothing to gain. The crank was pretty dry and corrosion has started compared to the 927 and amsoil. I lost .001 in rod side clearance mixture 36:1. As for avgas you say it is not 102.5, ,but leave that statement open(NO EVIDENCE) well here it is. I have news for you about avgas not being 102.5
RON 105-110.
MON 100-102
I will take the lowest #s 105+100/2 = 102.5

As for lazy throttle reponse and as you say "it sucks" for mx". I see no evidence of that out on the track. avgas has a bad rep and it is just not true. You run what you like,but don't make blanket statement's without any knowledge.

Keith.
00,03KX250

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#466325 - 09/24/03 06:11 AM Re: What is the favorite 2 cycle motorcycle oil
blano Offline


Registered: 12/24/02
Posts: 687
Loc: Canada
KX, Here is your proof. http://www.chevron.com/prodserv/fuels/bulletin/aviationfuel/9_ag_specsandtest.shtm

Notice that avgas is not rated on the r/m 2 scale instead they use a rich lean mixture scale. I believe the r/m 2 value for avgas is around the low mid ninties.
Now go over to www.vpfuels.com amd comapre the distillation curve of VP C-12 or MR-2 with avgas. You will notice that the 10% and 20% boiling points of avgas is much higer than the vp fuels. This provides for lazy response be cause the fuels cannot completley vaporize at lower rpm and temps. you will also notice that the endpoint will be much higher for avgas. this means in many circumstances your engine will not be hot enough or loaded enough to ignite all of the fuel which will decrease power slightly at high rpm. Now as far as mx2t soaking the crank with oil. This is directly related to how much oil is in the gas and has nothing to do with oil type nor is it indicative of better performance.Did you put the bike up after running it dry? castor oils have a well documented affinity for moisture and thus making a lousy storage lube. As for the increased clearance. What did you measure it with and why do you attribute the wear to the oil? Are you sure it wasnt dirt and or load related and how do you know this? Have you looked at the bearing journals with a microscope to look for skateing? bTW I have seen your posts on another board and remember Rich R reaming you out for posting complete BS.

[ September 24, 2003, 09:12 PM: Message edited by: blano ]

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#466326 - 09/24/03 06:29 AM Re: What is the favorite 2 cycle motorcycle oil
userfriendly Offline


Registered: 06/03/03
Posts: 953
Loc: Kamloops B.C. Canada
Perhaps you are both correct.
KX455 indicates that
AV gas makes no difference to performance in a Kawasaki.

[ September 24, 2003, 09:31 PM: Message edited by: userfriendly ]

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#466327 - 09/24/03 06:49 AM Re: What is the favorite 2 cycle motorcycle oil
blano Offline


Registered: 12/24/02
Posts: 687
Loc: Canada
User, I have tested avgas in many 250 jap bikes(cr's, kx's and rm's) in the past and the results where never as good as a good race fuel like vp c-12 or phillips b-35.

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