After break in........

[Isthatahemi]

Amsoil is best in lab tests, but 0W40 is a thick oil. Maybe too thick for the tolerences on these engines when new. You will lose a little hp and MPG. Amsoil is a good idea, but why not 0W30?

 

[Sled Dog]

Its a dry sump so there would be no HP loss.

 

[Isthatahemi]

Frictional loses due to pumping, added strain on the oil pump...Why not 30 weight??? 40 weight oil is for slightly looser tolerences, maybe after a few years

 

[Sled Dog]

Come on now do you really think that is going to make a notceable difference?

 

[Isthatahemi]

I'm merely tring to find out why you are recommending a non spec oil when Amsoil makes one. That's all....Dry sumps depend on a narrower range of engineering and lubrication tolerences, not trying to argue, just wondering why not W30?

 

[Sled Dog]

I'm merely tring to find out why you are recommending a non spec oil when Amsoil makes one. That's all....Dry sumps depend on a narrower range of engineering and lubrication tolerences, not trying to argue, just wondering why not W30?

For not trying to argue you seem to be doing a pretty good job of it. Have you looked at and read up on the product I am talking about. It is specifically engineered for this type of engine. That is why I run it and recommend it. If you really think there is that much difference then run a 30 weight oil that is desinged for a car and not for a high performance high revving 4 stroke engine.

 

[Isthatahemi]

I'm merely tring to find out why you are recommending a non spec oil when Amsoil makes one. That's all....Dry sumps depend on a narrower range of engineering and lubrication tolerences, not trying to argue, just wondering why not W30?

For not trying to argue you seem to be doing a pretty good job of it. Have you looked at and read up on the product I am talking about. It is specifically engineered for this type of engine. That is why I run it and recommend it. If you really think there is that much difference then run a 30 weight oil that is desinged for a car and not for a high performance high revving 4 stroke engine.

I only posted the question 3 times! And I'm very familiar with this product (0W40). But to be blunt it's the wrong weight, and that is grounds for voiding a warraty because it does not meet the requirement for that sled as suggested in the owners manual. So putting the wrong weight of oil is okay as long as the bottle says for snowmobiles! :ORC
This product was designed with Bombardier, Polaris and Artic Cat products in mind! They spec a 40 weight oil.

 

[Sled Dog]

I'm merely tring to find out why you are recommending a non spec oil when Amsoil makes one. That's all....Dry sumps depend on a narrower range of engineering and lubrication tolerences, not trying to argue, just wondering why not W30?

For not trying to argue you seem to be doing a pretty good job of it. Have you looked at and read up on the product I am talking about. It is specifically engineered for this type of engine. That is why I run it and recommend it. If you really think there is that much difference then run a 30 weight oil that is desinged for a car and not for a high performance high revving 4 stroke engine.

I only posted the question 3 times! And I'm very familiar with this product (0W40). But to be blunt it's the wrong weight, and that is grounds for voiding a warraty because it does not meet the requirement for that sled as suggested in the owners manual. So putting the wrong weight of oil is okay as long as the bottle says for snowmobiles! :ORC
This product was designed with Bombardier, Polaris and Artic Cat products in mind! They spec a 40 weight oil.

Excuse me but I thougt we were talking about 4 stroke engines! I could see the arguement for going under weight but not over weight it offers better protection.

 

[Amsoil 1]

use oil that is made four a 4 stroke engine

 

[Amsoil 1]

some dealers put in Amsoil after first service