Top End Longevity with good oil!

[Timbowe]

Theres an RD 250 Daytona sitting in a container down at work. Belongs to a mate. Ram air head. Pollished up. Looks good. goes O.k. Not my idea of a fun bike tho.

[doordie]

NastyNick,

KX500 rules!

 
 

//doordie

[hughes]

KXcam22,

Am sure you know this. Yamaha injector oil(air cooled play bikes) and Yamaha's 2-R(2-Stroke Racing oil) are two differents oils. I would re-connect those oil injection on your little guy's bikes and try Yamaha's Ring-Free. I would also use that in all your two stroke(Your Outboard) and 4 stroke toys. I use Yamalube because I get a discount and I believe in their products. After I break in my new top end I may try 40:1 or 50:1 instead of 32:1. I use 32:1 just because my manual says to.

[gowen]

Well, to add a chip to the block, I have used all oils, well those that are to name. First off, I used Klotz, mainly Super Tech (20% castor), then Benol, R2, H1R, Kaw Lube, and now MC1. I have never tried Amsoil due to the fact that a friend of mine fried his YZ250 running 100:1 and I don't want the same luck. Out of all, the MC1 is the ticket, I run it at 50:1, zero problems, zero spooge. Started running this from Cam's suggestion. That guy knows his stuff.  


[quote="NastyNick]
 JETTING is key![/quote]

Yup, no modifications beats a correctly jetted bike. No, not even a serious bore job.

[AUS_KX5]

Here's a vote for Belray MC-1 at 50:1 with 98 octane. Just had the barrel off my 03 KX5 after last years season which I clocked around 100 hrs or so of trail riding and top end was clean as a whistle. Just wiped off the combustion chamber and piston top, slipped on new rings and back together she went  

[Timbowe]

Cam, fuel stabiliser is a good move. I use it too. Specially when your filling a big can and it could sit round for a while. Fuels round here dont seem to have a very long life now days.

[Timbowe]

But surely it must be better if the fuel is not swamped with heavy 2 stroke oil, like the higher the ratio the harder it must be for the enginge to combust the mixture? Lets face it 2 stroke oil is not a highly combustable substance. So a 100:1 mix has got to be more flamable than a 50:1 ratio. Ams oil 100 has protected my and quite a few others bikes particually well over the years. They have been into synthectics since 1972. Being US made I thought some of you dudes mite have been using it?  They had some dumb multi-level marketing scheme here for a while trying to sell it. Only made a few  a little better off. They have scrapped it now. I just buy it straight from the importer in bulk. Cheapest.
                              5 cents there.