Oil Blending!!

[08hyper]

I was using Amsoil 10w40 motorcycle oil in my Ducati Hypermotard, and I did have a major engine failure, my crank bearings came apart, I do not know for sure it it had anything to do with the weight of the oil.

Most engine builders I talked to use the 20w50 in the air cooled engines, but I do like the cold flow of the 10w & the protection of the 50w, I see a trend in other brands of oil for the cold flow, such as 15w50 or 10w50.

Amsoil does not make a motorcycle 10w50, so I was thinking of making one, I would mix a qt of 10w40 to a qt of 20w50, as a compromise, would this make a 15w45? is there anything wrong with doing this? TIA Alex

[OldSkoolCool]

so run 10w-50 or 15w-50. Just use something other than amsoil.

[08hyper]

Originally Posted by OldSkoolCool

so run 10w-50 or 15w-50. Just use something other than amsoil.

The problem is that I have a bunch of different bikes, and I have a couple of cases each of the Amsoil 10w40 & 20w50, so I do not want to buy anymore oil, and besides I here Amsoil brand is decent oil. Aloha Alex

[Shazaam]

If you read your manual, 15W-50 is recommended. If your local average temperature is above freezing, alternatively you can use either 10w40 or 20w50 or any mixture of these two. There's no need to over-think this.

[JCPakBikes]

True

Originally Posted by Shazaam

If you read your manual, 15W-50 is recommended. If your local average temperature is above freezing, alternatively you can use either 10w40 or 20w50 or any mixture of these two. There's no need to over-think this.

[08hyper]

Originally Posted by Shazaam

If you read your manual, 15W-50 is recommended. If your local average temperature is above freezing, alternatively you can use either 10w40 or 20w50 or any mixture of these two. There's no need to over-think this.

Thanks Shazaam, my Hypermotard (08) manual says the 10w40 is recommended one, but it seems like all the engine builders are using a XXw50 for this motor, and the oil trend I have noticed is the lighter "winter" weights such as the 10w50 or 15w50, a friend of mine even told me he saw a 5w50 oil, but I could not find it.

I'm not too concerned about the freezing element, (I live in SoCal) but wanted to use the "lightest" winter weight oil because I was told that it will circulate in the motor quicker, and have less "start up wear" when the engine is cold.

And since Amsoil did not make a 10w50, and I had so much of the 10w40 & 20w50 Amsoil, that is why I was thinking of the blending. Am I "thinking" wrong? TIA Alex

[Amsoil Dealer Group]

Oils are NOT to be blended. There may be adverse reactions from the different additive packs.

You can run one of the 20W-50 oils AMSOIL has, ARO or MCV, or the RD-50 15W-50 as you do not have a wet clutch.

I would stay with the MCV 20W-50 if you want to run a 50 wgt.

The Best isn't cheap
Cheap isn't The Best

Bob

[08hyper]

Originally Posted by Amsoil Dealer Group

Oils are NOT to be blended. There may be adverse reactions from the different additive packs.

You can run one of the 20W-50 oils AMSOIL has, ARO or MCV, or the RD-50 15W-50 as you do not have a wet clutch.

I would stay with the MCV 20W-50 if you want to run a 50 wgt.

The Best isn't cheap
Cheap isn't The Best

Bob

I thought that you said that the 10w40 & 20w50 motorcycle oils had the same additive package, but that the base stocks make-up were a little different to achieve the different viscosities. Alex

[Amsoil Dealer Group]

Originally Posted by 08hyper

I thought that you said that the 10w40 & 20w50 motorcycle oils had the same additive package, but that the base stocks make-up were a little different to achieve the different viscosities. Alex

Alex, Some of the additives will be the same. Base stocks are blended and there are still additives to give the oil it's Specific Characteristics. Oils, especially Synthetics have come a long way over the years as they are Specifically Formulated for applications.

AMSOIL does not recommend blending even with their own oils as they have not been tested for compatibility.

You can safely mix oils in a situation to get you home but you should change the oil at the earliest possible convenience.

[08hyper]

Originally Posted by Amsoil Dealer Group

Alex, Some of the additives will be the same. Base stocks are blended and there are still additives to give the oil it's Specific Characteristics. Oils, especially Synthetics have come a long way over the years as they are Specifically Formulated for applications.

AMSOIL does not recommend blending even with their own oils as they have not been tested for compatibility.

You can safely mix oils in a situation to get you home but you should change the oil at the earliest possible convenience.

This is getting kinda funny........almost all oil companies say to use only their oil for the "best" results, and why not, they want to sell "their" oil, but every oil company out there, even Amsoil will also say that its OK to mix in a syn or dino oil in a pinch from any other companies, because they are all compatable, after all we really are just talking motor oils here, how many times have we had to add oil to our cars from different Mfg's and even different weights, with NO ill effects. I personally have never lost an engine by mixing oils from different companies.

So I find that its odd that Amsoil has such a strong issue with blending their motorcycle oils, especially when they have basically have the same additive pack, and the base oil stock is a PAO or POA? whatever, what do they think will happen? the oil will turn to jelly?? Aloha Alex