YZ 100 Fluids

[Joe]

I'm finally coming to the end of my 78 YZ 100 rebuild (btw, thanks to all who have helped, it was very much appreciated) Anybody have any sugestions on what kind of oil to out in the transmission and fuel mix? I've heard of people using 10w-40, 85w gear oil, and even ATF for the trans as long as what ever they used is a good quality and is changed often, the same would apply to my 78 YZ wouldn't it?  I'm running a 25-1 fuel to oil mix in my other 2 strokes (using Lucas semi synthetic 2 cycle oil) can I run the same mix in my YZ? I know it varies depending on what type of oil used. Any help is appreciated, thanks

[TMKIWI]

Thats a good question.
Unfortunatly everybody has a different idea and this thread could go on for years.
I think you have answered the question yourself.
Just use good quality oil in your tranny and if there is no clutch issues then it is fine.
Same with the motor.

[SachsGS]

If you go back through the forums you'll find, as TMKIWI pointed out,a lot of lively debate about dirt bike lubricants.I've found that as long as you stick with modern motorcycle lubricants (no big box outboard mix for example) it's pretty tough to go wrong.

[MyckMcClung]

I love Lucas

[WoodsRiderParts]

I'm finally coming to the end of my 78 YZ 100 rebuild (btw, thanks to all who have helped, it was very much appreciated) Anybody have any sugestions on what kind of oil to out in the transmission and fuel mix? I've heard of people using 10w-40, 85w gear oil, and even ATF for the trans as long as what ever they used is a good quality and is changed often, the same would apply to my 78 YZ wouldn't it?  I'm running a 25-1 fuel to oil mix in my other 2 strokes (using Lucas semi synthetic 2 cycle oil) can I run the same mix in my YZ? I know it varies depending on what type of oil used. Any help is appreciated, thanks

I have been using Motul Transoil Expert 10W40 for years in racing and trail riding. Never one internal issue with clutch or gearbox.  I am a site sponsor, if you want a liter to try out, let me know - I will hook you up.

Luke

[Joe]

Thanks for all the help. I've never heard of this motul stuff, I wouldn't mind giving it a try but I doubt there are any stores near were I live that sell it.  So as far as the fuel goes, will the 25-1 Lucas mix I mentioned earlier work? should I change it after the engine is broke in-maybe like to 32-1? 

[WoodsRiderParts]

http://www.motul.com/us/en-us/products?f[range]=21

There is a link to their MC products.  Let me know if you want to try some gearbox oil.

Luke