QUOTE(dopamine @ May 15 2020, 08:18 PM)
Hi bro Zeng, here is the sample taken after 12 hours.
Car 1: sample taken after 30 mins rested for 1.5 hour driving
Car 2: sample taken after 30 mins rested for 20 mins driving


Hi dopamine ,
If you don't mind sharing here what are the two engine types and oil brand/grade types in question ?
Thanks for the 12 hour blotter spots , btw .
IME these blotter spot images would keep 'changing' and probably 'mature' after 48 hours or more . After 48 hours the changes in the images would likely not be obvious and drastic up to and beyond 96 or 120 hours .
It would be interesting if you could personally 'read' and 'study' the changing 'faces' of the images over 24/48/72/96 hour intervals (and share with readers here for educational purposes) .
My preliminary readings of these two 2400 and 3200 km usage oil blotter spots are that they are good with plenty of life to go on and it appears there is no signs of 'fuel dilution' in both samples as of now .
Oil sample for Car 2 is taken after 20 mins driving , would the 48 hour blotters shows fuel dilution (through observing transparent halo at the outermost zone) ? IDK .
Edit: Car 2 has only 2388 km after 11 months usage (June 2019) . Its 12 hour blotter as presented does not clearly shows fuel dilution problem yet , and I would speculate its 48 hour blotter spot image is likely to show transparent halo at its outermost zone should this Car 2 engine actually encounters fuel dilution phenomenon .
This post has been edited by zeng: May 16 2020, 10:55 AM