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Old 09-13-2017, 03:17 PM
WINGAS WINGAS is offline
Join Date: Mar 2007
Location: Buffalo NY
Posts: 1,102
Folks, diesel oils are engineered with a huge dollup of solvents/cleaners, hence they blacken right away. Use to use DELO in my old big block Chevelle, and it would blacken in 3-4 hrs runtime. Now I use regular gas engine oil ( high zinc) and it stays clean all summer.

Its the oil formulation. You put a reg non-diesel oil in ( as a pro tech did on our "new" 95 before we bought it - with 5-30w no less! ) and it wont blacken so fast, if hardly at all.
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