What is your factory oil/fuel ratio?

[NWBackcountry]

Mine is 55:1 from the factory. I wonder if this is enough oil to keep the engine properly lubricated. My older chainsaw runs 40:1 mix and my new one runs 50:1, so the sled ratio isn't that far off. However, the chainsaws aren't making 150 horsepower either.

Does anyone know what the ratio should be?

What's the difference between using semi-sythetic and full synthetic when it comes to lubrication and the ratio?

If this ratio is high because of the EPA then I defintely want to add some more oil!!!

Thank you for any advice. Trying to keep pro in the powder and out of the shop.

 

[m8sandman]

i sure do wish they'd dump the oil injection all together, if you can't add 4 ounces of oil to a gallon of gas then you shouldn't be riding!!!! i'd say 40:1 is right where i want my sled. in the age of worry about every ounce heres a place where your carrying extra pounds your not gonna use, what a waste...

 

[dragonfire]

Oil pump setting

My sled was not using hardly any oil. I obtained a page from the service manual that told how to check and adjust the oil pump setting and adjusted mine up. It now uses more oil,which should extend engine life. I beleive they are set lean on oil to comply with EPA. POLARIS can never admit this but thank the EPA for this. Any dealer could e-mail you this info or maybe will set it for you. It just takes less time for me to do it myself at home.

 

[2XM3]

32:1 PLUS a extra 1.5 oz gallon premix....never any issues

 

[robertyoke]

there is an article in sno*tech magazine that says to add oil to each tank to prevent piston scuffing, from running low oil amounts. I'm not sure why they would say to add oil to fuel tank rather then adjust the oil pump setting, but i think is says the failures are from mid range/part throttle. that fits with what i read here about how this motor runs lean at part throttle.
Does anyone know why sno*tech would suggest adding oil to tank instead of adjusting the pump? its seems like a pita to add oil every time as compared to busting out a wrench or two to adjust the pump once and be done.

 

[Joerobi1]

does anyone know how to step by step adjust your oil pump to pump more oil?

 

[dmkhnr]

there is an article in sno*tech magazine that says to add oil to each tank to prevent piston scuffing, from running low oil amounts. I'm not sure why they would say to add oil to fuel tank rather then adjust the oil pump setting, but i think is says the failures are from mid range/part throttle. that fits with what i read here about how this motor runs lean at part throttle.
Does anyone know why sno*tech would suggest adding oil to tank instead of adjusting the pump? its seems like a pita to add oil every time as compared to busting out a wrench or two to adjust the pump once and be done.

Adding oil to your fuel has nothing to do with a mid range piston scuff, in fact low oil from the oil pump too would have nothing to do with a mid range piston scuff.
My sled uses hardly any oil. I've asked several other people about this and they all say that theirs is the same. If your worried about it, then just shorten the oil rod 1 turn.

 

[NWBackcountry]

My sled was not using hardly any oil. I obtained a page from the service manual that told how to check and adjust the oil pump setting and adjusted mine up. It now uses more oil,which should extend engine life. I beleive they are set lean on oil to comply with EPA. POLARIS can never admit this but thank the EPA for this. Any dealer could e-mail you this info or maybe will set it for you. It just takes less time for me to do it myself at home.

Can you PM the service page explaining the oil adjustment process? Or maybe just attach it to this thread?

 

[mountainhorse]

As said above.... Meeting EPA regs has much to do with ratio chosen. The oil formulation also has much to do with the EPA regs and making for lower emissions.

IMO... upping the oil ratio a bit will offer a bit more protection to the engine and will cost you minimally more for oil. A lower ratio is probably not an option for the factory due to the emissions requirements they face.

Most of the rental fleet owners that I know drop the ratio (increasing the oil use) to help prolong the engine life.

My 2 cents.

 

[thmck]

oil pump

Mountainhorse, Do you have step by step adjustment of oil pump on the Pro?

 

[xc6rider]

You need to adjust the oil pump to do it the proper way! Adding oil to fuel is a shortcut! And in doing so, you're making any midrange lean fuel condition worse, as the oil is displacing the fuel.

And as said above, I wouldn't recommend running any engine similar to these leaner than 40:1. And EPA has a big role in the reason for leaner recommendations all the sudden.

 

[pus1100]

premixing extra oil in fuel would not give extra lubrication to the rod bearing and crank bearings,since the 2011 800cfi only have injectors in transfer ports.it should only give extra piston/cylinder lubrication,right?

 

[NWBackcountry]

So how do you change the ratio at the oil pump? Is there a trick?

 

[Joerobi1]

Anyone??? How to change Oil pump Ratio????

 

[robertyoke]

Adding oil to your fuel has nothing to do with a mid range piston scuff, in fact low oil from the oil pump too would have nothing to do with a mid range piston scuff.
My sled uses hardly any oil. I've asked several other people about this and they all say that theirs is the same. If your worried about it, then just shorten the oil rod 1 turn.

i wasnt really worried about it, infact I really havent heard too many failures on the pro other then some rumors about some crank seal failures. I was just posting about what I read in sno*tech magazine, seemed weird that sno*tech made this out like its a big problem with piston scuffing on the pro 800. I also thought it strange that sno*tec would suggest adding oil to gas tank, instead of changing the oil pump, i was thinking that maybe the pump had a tamperproof seal on it or some such crap that would keep the end user from changing it do to warrantee or epa.

 

[dragonfire]

Manual on Oil Pump Adjustment

Can you PM the service page explaining the oil adjustment process? Or maybe just attach it to this thread? Thank you.
Garrett

I tryed to upload the attachment from the Polaris maintenance manual which is on page 10 titled oil pump adjustment, but could not get it to go. Maybe we could get Mountainhorse to help us with this. I will try again maybe in the morning ,otherwise you can get this info from any Polaris dealer-called periodic maintenance manual oil pump adjustment.

 

[modsledr]

i wasnt really worried about it, infact I really havent heard too many failures on the pro other then some rumors about some crank seal failures. I was just posting about what I read in sno*tech magazine, seemed weird that sno*tech made this out like its a big problem with piston scuffing on the pro 800. I also thought it strange that sno*tec would suggest adding oil to gas tank, instead of changing the oil pump, i was thinking that maybe the pump had a tamperproof seal on it or some such crap that would keep the end user from changing it do to warrantee or epa.

The reason SnoTech recommends adding oil to the fuel for the pistons, is because the oil injectors spray/pressurize oil to the crank and rod bearings...none of the oil injectors are there specifically for the pistons. Some of the oil will find its way to the pistons, but adding oil to your fuel will provide some additional lubrication to the pistons.

 

[gmustangt]

I've had some guys tell me adding oil to your fuel isn't good for your injectors?!
Any truth to that

 

[gman086]

I've had some guys tell me adding oil to your fuel isn't good for your injectors?!
Any truth to that

Today's oils formulated specifically for sleds should be fine but I smoked a motor once because bad oil emulsified and gummed up a main jet (thanks a lot dad for the oil you got for "free" from the neighbor). And yes, sled will run leaner with premix; not necessarily a bad thing since the mapping seems to err on the safe side anyway (but I wouldn't run E10 with the non-ethanol plug then if premixing!).

Have FUN!

G MAN

 

[dmkhnr]

i wasnt really worried about it, infact I really havent heard too many failures on the pro other then some rumors about some crank seal failures. I was just posting about what I read in sno*tech magazine, seemed weird that sno*tech made this out like its a big problem with piston scuffing on the pro 800. I also thought it strange that sno*tec would suggest adding oil to gas tank, instead of changing the oil pump, i was thinking that maybe the pump had a tamperproof seal on it or some such crap that would keep the end user from changing it do to warrantee or epa.

I wasn't meaning to point a finger at you, as I understand you were just quoting the magazine.

Adding oil to fuel actually leans the mixture which would make a lean midrange even worse.

The oil pump rod is located on the inside of the throttle bodies and routes to the oil pump under the throttle bodies. I haven't looked yet, but I would imagine that you pop the rod off the throttle bodies, remove bodies out of the way and pop the rod off the oil pump. Then shorten the threaded rod 1 full turn.