Yamalube 15w 50
- Thread starter Accident
- Start date
Stephenfz6r
New Member
I put this oil in and it works fine.
I was looking at my break in service and they installed 20w 50. Now for a little history on the numbers..
The viscosity grade (for example, 5W-30) tells you the oil's thickness, or viscosity. A thin oil has a lower number and flows more easily, while thick oils have a higher number and are more resistant to flow. Water has a very low viscosity -- it is thin and flows easily. Honey has a very high viscosity -- it is thick and gooey.
Multi-weight oils (such as 10W-30) are a new invention made possible by adding polymers to oil. The polymers allow the oil to have different weights at different temperatures. The first number indicates the viscosity of the oil at a cold temperature, while the second number indicates the viscosity at operating temperature.
At cold temperatures, the polymers are coiled up and allow the oil to flow as their low numbers indicate. As the oil warms up, the polymers begin to unwind into long chains that prevent the oil from thinning as much as it normally would. The result is that at 100 degrees C, the oil has thinned only as much as the higher viscosity number indicates. Another way of looking at multi-vis oils is to think of a 20W-50 as a 20 weight oil that will not thin more than a 50 weight would when hot.
Basically 5w compared to 20w is better suited for colder temperatures. Here in the South most people use 10w-20w due to the temp not going lower than 10*F. 5w is good to -20*F.. It is all climate depended when everything is broken down to laymen terms.
My question is, who's going to ride in -20* weather?
The viscosity grade (for example, 5W-30) tells you the oil's thickness, or viscosity. A thin oil has a lower number and flows more easily, while thick oils have a higher number and are more resistant to flow. Water has a very low viscosity -- it is thin and flows easily. Honey has a very high viscosity -- it is thick and gooey.
Multi-weight oils (such as 10W-30) are a new invention made possible by adding polymers to oil. The polymers allow the oil to have different weights at different temperatures. The first number indicates the viscosity of the oil at a cold temperature, while the second number indicates the viscosity at operating temperature.
At cold temperatures, the polymers are coiled up and allow the oil to flow as their low numbers indicate. As the oil warms up, the polymers begin to unwind into long chains that prevent the oil from thinning as much as it normally would. The result is that at 100 degrees C, the oil has thinned only as much as the higher viscosity number indicates. Another way of looking at multi-vis oils is to think of a 20W-50 as a 20 weight oil that will not thin more than a 50 weight would when hot.
Basically 5w compared to 20w is better suited for colder temperatures. Here in the South most people use 10w-20w due to the temp not going lower than 10*F. 5w is good to -20*F.. It is all climate depended when everything is broken down to laymen terms.
My question is, who's going to ride in -20* weather?
motoneta123
New Member
sorry i got late to this thread.... but my first service is coming soon, doesn't the owners manual recomend 10-40 yamalube?
It requires Yamalube 4 10w-40 OR 20w-50 and SAE 10w-40 or SAE 20w-50 by the service manual.sorry i got late to this thread.... but my first service is coming soon, doesn't the owners manual recomend 10-40 yamalube?
Recommended Oil Grade: API Service SG or higher, JASO Standard MA
Mine doessorry i got late to this thread.... but my first service is coming soon, doesn't the owners manual recomend 10-40 yamalube?
But i bought the oil at the dealer and this is what they recommended
its working nice....But if it for some reason doesnt work out i can always blame them
motoneta123
New Member
does anyone uses motul? i can get that at my local autozone