I'd still recommend doing any follow on testing with Amsoil and Redline @ 3000 mile intervals. I think this makes it easier to look at the trends in wear numbers and oil degradation. When you test every 1000 miles, there is enough variabily in the wear numbers and TBN's that the values can jump up and down.
This is particuarly true if you are adding fresh oil and/or changing oil filters after taking the samples. It is only when you compare samples taken several thousand miles apart that you can make any decent assessment of the data. If you gave me this data set, I'd plot the 3k/6k/9k/12k/15k numbers for wear, viscosity, TBN, etc and use that to do an assessment. Doing a test after only 1000 miles is particularly misleading as there are always residual oil and wear metals remaining in the engine. You'd be better off testing 50-100 miles after putting the new oil in so you can better assess these levels of residuals.
Testing every 3000 miles also allow you to test 3 additional oils for the price of one - I'd suggest Amsoil, Redline and the German Syntec or perhaps RP. Anyway, it's just a thought ....
Tooslick
This is particuarly true if you are adding fresh oil and/or changing oil filters after taking the samples. It is only when you compare samples taken several thousand miles apart that you can make any decent assessment of the data. If you gave me this data set, I'd plot the 3k/6k/9k/12k/15k numbers for wear, viscosity, TBN, etc and use that to do an assessment. Doing a test after only 1000 miles is particularly misleading as there are always residual oil and wear metals remaining in the engine. You'd be better off testing 50-100 miles after putting the new oil in so you can better assess these levels of residuals.
Testing every 3000 miles also allow you to test 3 additional oils for the price of one - I'd suggest Amsoil, Redline and the German Syntec or perhaps RP. Anyway, it's just a thought ....
Tooslick