Originally Posted By: OVERKILL
Originally Posted By: skyship
The pictures are nice, but they still don't provide a comparison of the use of one oil against another. The one thing that is odd about the engine oil industry is that there is no independent group testing the different products. If you produce tyres the ADAC do some very good tests, but if you make an engine oil no one tests it for performance even in Germany and when the car manufacturers do any tests they don't publish anything useful.
To quote Doug Hillary (paraphrased):
"When speaking to some engineers in Germany I asked the question as to whether there were any differences observed between lubricants used in service. I was told that in general, there were no real differences in performance between any of the lubricants shown on the approval list for a given application."
What I take away from this is that in the case of the Euro marques, if you use an approved oil for an application, it is very unlikely for you to have any issues with wear, cleanliness....etc. The engineers have already done the legwork for you.
But what I also take away from Doug's writings on this subject is that a vast number of these companies use Mobil 1 0w-40. I'm certain there is a reason for the fact that, given how many oils are on the approved products list, this lubricant continually gets chosen.
And yes, the pictures are nice. And they provide proof of performance. Can another lubricant, used in the same manner, provide comparable performance? I don't know, somebody would have to test that. For now, what we DO have is actual evidence of Delvac 1 performing in the manner indicated. The burden is not on Mobil to provide proof that a competing product can stand up as well.
The pictures seem to be for Delvac, but we were discussing M1 0/40, so are not too relevant. What we need are comparisons between different oils.
Originally Posted By: skyship
The pictures are nice, but they still don't provide a comparison of the use of one oil against another. The one thing that is odd about the engine oil industry is that there is no independent group testing the different products. If you produce tyres the ADAC do some very good tests, but if you make an engine oil no one tests it for performance even in Germany and when the car manufacturers do any tests they don't publish anything useful.
To quote Doug Hillary (paraphrased):
"When speaking to some engineers in Germany I asked the question as to whether there were any differences observed between lubricants used in service. I was told that in general, there were no real differences in performance between any of the lubricants shown on the approval list for a given application."
What I take away from this is that in the case of the Euro marques, if you use an approved oil for an application, it is very unlikely for you to have any issues with wear, cleanliness....etc. The engineers have already done the legwork for you.
But what I also take away from Doug's writings on this subject is that a vast number of these companies use Mobil 1 0w-40. I'm certain there is a reason for the fact that, given how many oils are on the approved products list, this lubricant continually gets chosen.
And yes, the pictures are nice. And they provide proof of performance. Can another lubricant, used in the same manner, provide comparable performance? I don't know, somebody would have to test that. For now, what we DO have is actual evidence of Delvac 1 performing in the manner indicated. The burden is not on Mobil to provide proof that a competing product can stand up as well.
The pictures seem to be for Delvac, but we were discussing M1 0/40, so are not too relevant. What we need are comparisons between different oils.