NE-NYTRO
Newbie
Has any one tried running heavier weight oil than the 0- 30W oil that Yami uses???
Just having a very hard time swallowing running ZERO viscosity oil regardless of the new thoughts on oil...
Just having a very hard time swallowing running ZERO viscosity oil regardless of the new thoughts on oil...
it is not zero viscocity per say. What a 0w-40 or 0w-30 grade oil is what they call a multi-viscosity oil. Basicly it means it has the cold weather performance of a 0w grade along with the high temp performance of the 30 or 40 grade. what this all boils down to is using a 0w-40 like Amsoil's powersports oil you have easy cold weather starting due to it very low pour point temperature. but the protection of the higher grade or "heavier" 40 weight oil at temp.
I can pm you more info on oil viscosity if you are interested. but I would NEVER use a 15w anything in a snowmobile unless you only plan on riding in 40+ degree weather.
I can pm you more info on oil viscosity if you are interested. but I would NEVER use a 15w anything in a snowmobile unless you only plan on riding in 40+ degree weather.
LazyBastard
TY 4 Stroke God
0W means that the oil can be pumped at -35C, 5W means that the oil can be pumped at -30C, etc., 20W means that it can be pumped at -15C. I think you want the oil in your sled to be pumpable at temperatures significantly lower than -15C, right? If you're using a 20W at -30C, you might find yourself in a situation where the engine is running, but the oil isn't pumping.
The second number is a measure of the viscosity at 100C, so anythingW30 will perform exactly the same when the engine is warmed up. No matter what the (W)inter value is, it is ALWAYS MORE VISCOUS when it is cold than when it is warmed up. It never *needs* to be more viscous than with the warmed-up viscosity.
The *ideal* oil can't be properly cataloged under xWy format. It would have these characteristics.... constant viscosity over the entire possible temperature range -- that means from as cold as you could possibly stand it up to 100C. Generally, the lower the winter value, the better.
50 viscosity oil is also fine in these engines, just be sure to keep the winter number down low (stick with 0W or 5W).
The second number is a measure of the viscosity at 100C, so anythingW30 will perform exactly the same when the engine is warmed up. No matter what the (W)inter value is, it is ALWAYS MORE VISCOUS when it is cold than when it is warmed up. It never *needs* to be more viscous than with the warmed-up viscosity.
The *ideal* oil can't be properly cataloged under xWy format. It would have these characteristics.... constant viscosity over the entire possible temperature range -- that means from as cold as you could possibly stand it up to 100C. Generally, the lower the winter value, the better.
50 viscosity oil is also fine in these engines, just be sure to keep the winter number down low (stick with 0W or 5W).
rage man
TY 4 Stroke Junkie
^^ the book says 0 30 thats what i run
sleddheadd
TY 4 Stroke God
the society of automotive engineers(SAE) have established 12 different viscosity grades. vicosity grades will determine the oils dynamic viscosity and kinematic viscosity.
the dynamic viscosity is the first # you see usually followed by a W , which , yes , you can associate that # with winter to help you think of how it performs in cold weather.the SAE has determined 6 grades of "winter" formulas beginning with 0W and working up to 25W in 5 point incriments. what they are measureing with this is the lubricants ability to pump 60,000centipointe units with no yield stress at certain temps. for ex.
0W = 60,000 cP @-40*C
5W = 60,000 cP @-35*C
10W = 60,000 cP @ -30*C and so on till 25Wwhich is 60,000 cP@-15
basically the smaller the # the better protection for colder temps.
the next # measures the lubricants ability to pour or its kinemetric viscosity, which is measured by the time it takes an oil to pour out of a container. the temp. is always consistant at 100*C (212*F)
this is #ered from 20 -60 in 10 pt incriments and is measured using sabolt universal second(sus) for ex.
sae20@100*c will empty in min.5.6sus and a max. of9.3sus
30 = 9.3sus - 12.5sus
40 = 12.5sus- 16.3sus
60 = 21.9sus - 26.1sus
in other words the oil will empty out of the container just by pouring in 5.6 seconds (roughly) to 9.3 seconds
remember you do not want your oil viscosity to thin in hot temps. because you will lose you ability to lubricate and protect your engine.
a good ex is this. a truck driver leaves florida with a load of oranges heading for minnesota, in fla. he runs SAE 30 oil because of the ambient temp. in fla. when he (or she) get to min. the driver finds the SAE 30 is to viscious or thick to handle the sub zero temps and is having a hard time starting the vehicle. after changing oil to an SAE 15W the starting problem is solved and he can continue on. when he gets back to fla. he finds the SAE 15W is to thin due to the high temps. in fla. therefore the lubricant can not protect the engine like it should.
thus they have made multi viscosity oils. the point is not that a certain oil is thicker or thinner because under different circumstances they will all flow the same it just depends on the temp. of the product.
hnow many times have we been in the north woods and the temp. has been -30* one day and 30* the next? i've seen it! make sure you choose an oil that is best for your climate and has a broad viscosity range to cover those sudden changes in weather!
basically the ultimate protection for any motor would be a 0W-60 but the viscosity range of that oil is nearly impossible to achieve
i run amsoil 0W-40 four stroke in mine and i love it!
the dynamic viscosity is the first # you see usually followed by a W , which , yes , you can associate that # with winter to help you think of how it performs in cold weather.the SAE has determined 6 grades of "winter" formulas beginning with 0W and working up to 25W in 5 point incriments. what they are measureing with this is the lubricants ability to pump 60,000centipointe units with no yield stress at certain temps. for ex.
0W = 60,000 cP @-40*C
5W = 60,000 cP @-35*C
10W = 60,000 cP @ -30*C and so on till 25Wwhich is 60,000 cP@-15
basically the smaller the # the better protection for colder temps.
the next # measures the lubricants ability to pour or its kinemetric viscosity, which is measured by the time it takes an oil to pour out of a container. the temp. is always consistant at 100*C (212*F)
this is #ered from 20 -60 in 10 pt incriments and is measured using sabolt universal second(sus) for ex.
sae20@100*c will empty in min.5.6sus and a max. of9.3sus
30 = 9.3sus - 12.5sus
40 = 12.5sus- 16.3sus
60 = 21.9sus - 26.1sus
in other words the oil will empty out of the container just by pouring in 5.6 seconds (roughly) to 9.3 seconds
remember you do not want your oil viscosity to thin in hot temps. because you will lose you ability to lubricate and protect your engine.
a good ex is this. a truck driver leaves florida with a load of oranges heading for minnesota, in fla. he runs SAE 30 oil because of the ambient temp. in fla. when he (or she) get to min. the driver finds the SAE 30 is to viscious or thick to handle the sub zero temps and is having a hard time starting the vehicle. after changing oil to an SAE 15W the starting problem is solved and he can continue on. when he gets back to fla. he finds the SAE 15W is to thin due to the high temps. in fla. therefore the lubricant can not protect the engine like it should.
thus they have made multi viscosity oils. the point is not that a certain oil is thicker or thinner because under different circumstances they will all flow the same it just depends on the temp. of the product.
hnow many times have we been in the north woods and the temp. has been -30* one day and 30* the next? i've seen it! make sure you choose an oil that is best for your climate and has a broad viscosity range to cover those sudden changes in weather!
basically the ultimate protection for any motor would be a 0W-60 but the viscosity range of that oil is nearly impossible to achieve
i run amsoil 0W-40 four stroke in mine and i love it!
NB-NYTRO
TY 4 Stroke Junkie
My local dealer couldn't get 0-30 last winter.. He said they've been putting the 5-30 in all the sleds without any problems.