I agree with you here nor did I ever say use 15w-40 (thicker) in all applications. Since we are talking about tractors a 15w-40 or a 5w-30 would be fine. Or even a 10w-30 would be fine. If you do not have any idea, look in the manual; In there they most likely will have the ones I listed.
Now in my car I would never use a 15w-40 or a 20w-50. I would use a 5w-30, 5w-20 or a 0w-30. I would select some for difference reason based on additives and there passing standards.
So how do you define thicker? A 5w-30 vs 5w-40? Or a 0w-30 vs 20w-50? Again the quality of oil makes a difference here since they can react differently. What is excess wear? 5 ppm of Lead vs 8 ppm of lead?
I do not know what oil in all police departments’ use, but 10 to 1 they are going by price and not performance. I have not talked to many of these people in several years now.
But on the flip side I would not rush and make global statements that thin is in either? Different oils perform differently and some engines will behave differently. I think, in general, that thicker oils in the future will become obsolete. These are based upon what I have seen in the last 10 years.
Now in my car I would never use a 15w-40 or a 20w-50. I would use a 5w-30, 5w-20 or a 0w-30. I would select some for difference reason based on additives and there passing standards.
So how do you define thicker? A 5w-30 vs 5w-40? Or a 0w-30 vs 20w-50? Again the quality of oil makes a difference here since they can react differently. What is excess wear? 5 ppm of Lead vs 8 ppm of lead?
I do not know what oil in all police departments’ use, but 10 to 1 they are going by price and not performance. I have not talked to many of these people in several years now.
But on the flip side I would not rush and make global statements that thin is in either? Different oils perform differently and some engines will behave differently. I think, in general, that thicker oils in the future will become obsolete. These are based upon what I have seen in the last 10 years.