I have enjoyed learning about oils from experts and reading all the analyses posted on this site. However, it seems that we don't really have a systematic way to "test" for the best oil out there; analyses seem to vary a lot by factors such as vehicle, driving conditions, etc. even for the same brand. I would love to do a statistical analysis, like a regression, that controls for all these factors to figure out which oil has the greatest impact on wear rates. However, I don't have enough time to go through all the posts and assemble the data. I would be willing to perform the regression analysis if somebody is willing to collect the data. Are there any takers? The data can be put into an Excel spreadsheet in the following format: Column 1 **Column 2**Column 3** Column4***Etc. Analysis ***OilBrand***Iron****** %Hwy 1 2 3 . . . N where N = number of analysis we have (of course this is growing by the day). The columns contain the key variables we are interested and the rows are the observations (the analyses). You should include as many important variables as available. So for example, if the car is a turbo, create a column with the heading "turbo". Then write either "yes" or "no" into the row matching the analysis depending on whether it's a turbo or not. Another variable to consider is %Hwy driving. Then enter 75 if the analysis was done for a car that was driven 75% highway over the oil run interval. Feel free to add as many variables as you think important. Let me know if anybody is interested. I think this would give us much more info than reading each analysis one by one which is only moderately better than anecdotal evidence since the human mind can't control all the variables.