Originally Posted by jim etcheverry
Shell's entire line of Rotella is a "low ash" oil. Not an ashless dispersant.
Per Shell's website, the T6 is a low ash, multi-functional dispersant.
Please help me out...what is the difference, and how does it differ from a "high ash" oil? An oil industry representative recommended this oil. No, he did not work for Shell. He said it would be very compatible with 100LL.