What premix oil should I use for bedding in topend

howes · May 17, 2009

I'm putting in a new piston & Rings tonight after work.
What premix 2 stroke oil should I use in the bedding in period ?
Where I live I can;t get much of a choice so a couple of names & brands would be of great help / Thanks peter

tutender · May 18, 2009

Opti lube works great. Don't worry about the 32:1 ratio the factory recommends as this mixes at about 80:1 but is far thicker and it's designed to reduce break in times.
It's a smokeless formula which I love. Don't forget to clean out the KIPS!

julien_d · May 18, 2009

When i'm bedding my top end, I use KY warming jelly. It's nice stuff.

And then ignore folks who tell you to break in your top end with some synthetic at ridiculous ratio's. First off, break in's should NOT be done using synthetic oils. Use a conventional oil for the break in period and then switch to synthetic later if you like.

There is plenty of debate over the opti lube stuff right now. While I wouldn't be opposed to trying it out for a while, I would NOT use it to break in a set of rings.

My common sense tells me to use a quality name brand conventional 2 stroke oil at 32:1 to break it in. After that, choose the oil you want to run and the mixture you want to run it at and jet accordingly. And then Live happily ever after :)

howes · May 18, 2009

Thank you , I thought the right thing to use was just a mineral oil at first.
Thank you both for the Tips on the oil
Thanks again / Peter

ws6transam · May 18, 2009

Peter, go with a conventional premix at 24:1 to 32:1, then once broken in with one tank of fuel, shift to your favorite synthetic and your pet ratio, then tune the carb accordingly.

I am partial to Amsoil Interceptor at 50:1, which is their recommended premix ratio. I've been running 40:1 and there is a nice black slick on that has everything coated on the inside of the exhaust port. I think 50:1 will be safe enough for my big, lazy low revving 500. Amsoil's street price is about $38 to $40 a gallon but I've bought it for as low as $32/gallon, meaning it's about the same price as Yamalube. One thing about the steep ratios (greater than 32:1) though is that the engine will run a bit richer so you might need to lean out by dropping a notch on your needle, and go down one main jet size.

mudpack · May 19, 2009

If you've assembled the components to factory clearances, you can use whatever oil you normally run...and at the ratio you normally run.
There is no benefit from using a special oil and/or special mix ratios on a fresh two-stroke. When your bike was brand new, it had all new components. The factory owners manual did not specify a special break-in lube/ratio on a new machine. That tells us much.
Break-in procedure is important. Break-in oil is not; use a good name brand, conventional or synthetic.

julien_d · May 19, 2009

eh, that came off rude. Srry.

Lot's of info available about break in's with synthetic being a bad idea. I have no idea if it's BS or not, but it makes sense to me so I use conventional for the first little while.

howes · May 19, 2009

Thanks you all for the information,
I will just use a mineral Oil for the first tank.
I have been a little delayed putting it back together, It needed a RHS Sub-Shaft O-Ring. I think I damage it alittle on removing it.
The local Bike shop tells me it will be here today sometime.
I want to get in done by the weekend , I have two Daughters & have bought them a PW-50 each . My sister has a farm about 2 hrs away where we ride . There]s about 9000 Acres to play in . I have been trying go for weeks ,but always somthing pops up & I can't go .
This weekend is must !!

mudpack · May 20, 2009

howes said:
My sister has a farm about 2 hrs away where we ride . There]s about 9000 Acres to play in . I have been trying go for weeks ,but always somthing pops up & I can't go . This weekend is must !!

Makes me realize how lucky I am: I ride the trail bike out of my shop/garage and five minutes later I am in the river bottoms, bouncing off trees! Let's me ride almost every day for an hour after work....
Allow me to give some fatherly advice: don't put off time spent with your young children. They will be all grown up and gone in a twinkling of an eye. :(
MAKE time to spend with your daughters. They will never forget it.

howes · May 25, 2009

Yeah , I have the best 2 girls in the world !
I have been both Mum & dad to them for over 7 years because their Mum never wanted much to do with them & proffered the finer things in life $$$
Recently she came back & wanted to start seeing them more. I found out the hard-way that unless you front up to Court in Heels & wearing a dress you have NO chance against a woman in a Custody battle . I'm hanging on to ever second with them . So the bike weekends away are precious. We had agreat weekend with Bikes & Horses

whenfoxforks-ruled · May 25, 2009

mudpack said:
If you've assembled the components to factory clearances, you can use whatever oil you normally run...and at the ratio you normally run.
There is no benefit from using a special oil and/or special mix ratios on a fresh two-stroke. When your bike was brand new, it had all new components. The factory owners manual did not specify a special break-in lube/ratio on a new machine. That tells us much.
Break-in procedure is important. Break-in oil is not; use a good name brand, conventional or synthetic.

This came off as rude? Straight information without guy figuring involved is not rude, its fact. "When/if I get really anal, I will run a tad richer oil ratio", and starve it for gas? See the point? Any decent premix, at the factory recommended oil ratio, and heat cycle it. Even that is not recommended on some models, but I do draw the line there. I like heat cycles on all rebuilds. The entire new engine needed break in time, an over haul is substantially less.

julien_d · May 25, 2009

I have no idea what you're talking about, honestly can't make much sense out of that. If you were referring to my post though, the "that came off as rude, sorry" comment was directed towards my own post before I edited it due to rudeness.

Don't drink and post people! It's bad practice...

whenfoxforks-ruled · May 25, 2009

julien_d said:
I have no idea what you're talking about, honestly can't make much sense out of that. If you were referring to my post though, the "that came off as rude, sorry" comment was directed towards my own post before I edited it due to rudeness.

Don't drink and post people! It's bad practice...

You are assuming/figuring again. I did not see the edit, coffee is very good today, day off even better!

julien_d · May 25, 2009

I'm not assuming or figuring. I'm saying that I SHOULD NOT DRINK AND POST! Fact, as u say. :) . Yes, coffee is good. Day off would be even better for sure, but here I sit @ work.

howes · May 25, 2009

Wow ! What happen to this thread ? you would have to be Einstein to follow it .

julien_d · May 25, 2009

howes said:
Wow ! What happen to this thread ? you would have to be Einstein to follow it .

LOL!

Yeah, I don't know. To summarize, everyone pretty much agrees that using whatever oil you like during break-in will be fine. I'm superstitious, so I run conventional oils for the first tank of gas.

What premix oil should I use for bedding in topend

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