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jakeru · 10-08-2016, 01:49 PM

Thanks for the suggestion, JFP - I will take a look at running a synthetic 5W40 diesel oil for my next "engine cleaning" fill. From my experience with diesel engines, I recall their oil sure becomes dark (routinely completely black)!

By the way, pictured is what the 7500 mile old oil looked like (shown on a paper towel alongside new, uninstalled oil for comparison).

10-08-2016, 01:49 PM	#11
jakeru Registered User Join Date: May 2015 Location: Greater Seattle, WA Posts: 534	Thanks for the suggestion, JFP - I will take a look at running a synthetic 5W40 diesel oil for my next "engine cleaning" fill. From my experience with diesel engines, I recall their oil sure becomes dark (routinely completely black)! By the way, pictured is what the 7500 mile old oil looked like (shown on a paper towel alongside new, uninstalled oil for comparison). Attached Images __________________ 2001 Boxster