Oil Ratio When using Amsoil Sythedic Dominator

[Blaaster]

DOMINATOR is recommended for use in high performance stock or modified two-cycle motors, including air- or liquid-cooled snowmobiles, personal watercraft, motorcycles (moto X), ATVs, go-carts and outboard motors*. Good for use with coated or non-coated pistons, high-octane racing fuels and exhaust power valves. Compatible with most other two-cycle oils; however, mixing oils should be minimized..

From the Amsoil website.

 

[colescustom]

I use redline 2 cycle @ 32:1 - I think thats about 120ml

and i agree with everyone else, dont run anything less id rather run it a little thick than thin, atleast that way you can alter the ratio a bit if u like more oil

 

[yamaha28]

ahhh so mixing oils should be minimized! gotcha

 

[Blaaster]

I use redline 2 cycle @ 32:1 - I think thats about 120ml

and i agree with everyone else, dont run anything less id rather run it a little thick than thin, atleast that way you can alter the ratio a bit if u like more oil

True, but bear in mind altering oil ratio also changes air/fuel ratio, its not quite that simple!

 

[Blaaster]

ahhh so mixing oils should be minimized! gotcha

Especially mixing of mineral or semi syn oil with castor bean oil, they dont mix that well.

 

[yamaha28]

Especially mixing of mineral or semi syn oil with castor bean oil, they dont mix that well.

I can imagine, does that mean that the oil should not be mixed with gas, or just other oils

 

[Blaaster]

Dont mix oils together.

If I change my premix oil, I always run the fuel tank real dry, so the new fuel contains mainly the new oil mix.

If I change from mineral or semi syn to a bean oil, I always flush out the crankcase with some new premix, and then add a few cc's of the new oil to the case.

I do not think going from a fully syn oil, to bean oil would require this, as bean oil seems to mix ok with it.

I possibly am doing an overkill, but I like to play it safe.

 

[yamaha28]

playing it safe is always good, what do you use in your ccrankcase?

 

[Blaaster]

I have been using Maxima 927 2 stroke oil, but recently, due to lack of supply I run Castrol R20 at 25:1

 

[yamaha28]

so you run pre-mix in the case?

 

[boomadge]

so you run pre-mix in the case?

Good one man

Klotz super techniplate at 32:1 on the top & Yamalube Trans Oil Plus on the bottom for the blasty.
Amsoil Dominator at 50:1 on the top & Yamalube Trans Oil Plus on the bottom for the shee.

 

[Blaaster]

playing it safe is always good, what do you use in your ccrankcase?

So you meant gearcase, or box.

Plain old 10w30 motor oil with no friction modifiers in the gearbox, although toying with the idea of using ATF type F.

 

[yamaha28]

Good one man

Klotz super techniplate at 32:1 on the top & Yamalube Trans Oil Plus on the bottom for the blasty.
Amsoil Dominator at 50:1 on the top & Yamalube Trans Oil Plus on the bottom for the shee.

Oh thank Jesus, I thought that was pre-mix in the case! I mis-read it.

So you run the Dominator at 50:1? How is that working out?

 

[boomadge]

2 yrs on the shee rebuild and still have 160ish compression on both cylinders,
and I am not easy on her lol. I went from 290 mains wih 32:1 (with klotz) on the breakin and had to bump up to 310 mains at 50:1 (with amsoil)and she runs great.

 

[yamaha28]

2 yrs on the shee rebuild and still have 160ish compression on both cylinders,
and I am not easy on her lol. I went from 290 mains wih 32:1 (with klotz) on the breakin and had to bump up to 310 mains at 50:1 and she runs great.

gotcha, wonder if that would be the same case for the blaster? Bump up the main a bit and run her on 50:1

 

[boomadge]

gotcha, wonder if that would be the same case for the blaster? Bump up the main a bit and run her on 50:1

blaster engines fluctuate in temp so much as well as run much hotter on average than a liquid cooled one, I have thought of testing 50:1 on the blasty
but feel even with the added fuel to help cool it internaly,the oil burnoff imo is much quicker so im a bit skeptical of going much lower than 32:1

 

[yamaha28]

blaster engines fluctuate in temp so much as well as run much hotter on average than a liquid cooled one, I have thought of testing 50:1 on the blasty
but feel even with the added fuel to help cool it internaly,the oil burnoff imo is much quicker so im a bit skeptical of going much lower than 32:1

good point with the air cooled part, I will probably pick up some other 2 stroke stuff. Then when the blasty is all broken in I will do some experimenting with plug chops with the dominator at 32:1

 

[tigersfan45700]

32:1 suits your application well!

But I would plug chop to confirm that it has not leaned out the fuel/air mix!

Adding more oil lessens the fuel in the mix!

so once i use the stuff i already mixed (only a gallon at 44:1) I should be ok mixing 32:1 :-/I:I with Dominator

 

[Blaaster]

so once i use the stuff i already mixed (only a gallon at 44:1) I should be ok mixing 32:1 :-/I:I with Dominator

32:1 and plug chop to see if you need a different main jet.

Rumor has it that Dominator is more viscious.

Chech for yourself.

AMSOIL - DOMINATOR Synthetic 2-Cycle Racing Oil

 

[Budget_Blaster]

I run amsoil 10w30 fully synthetic in the crank case and if i cant find that i run amsoil 80/90 gear oil.But it makes the clutch sticky when cold but it feels like it grips harder hot than the 10w30.

I dont care for the atf myself but many do.

Also idk what your mods are but mine are a 240BBK,FMF SST2 full exhaust,VF3's,and the stock carbs jetted at 340main,32.5 pilot,and stock jet needle middle clip and it loves the 32.1 mix.