Quote:
Originally Posted by cycleguy55
I would think the best way to conduct testing would be to set aside a control sample of oil when performing an oil change, then withdrawing and comparing a sample of used oil to compare against the control sample. You should then have a true determination of the differences that occurred as a result of running the engine. |
Yes, but that's largely academic. In addition, there's another quart trapped in the engine's crevices/etc that gets mixed when running... so you never get all the oil out when changing.
Blackstone has PLENTY of oil baselines to compare against. Hit their website and read some sample reports.