/ What tractor do you think is the quietest ever? #11
You can do that on older diesels. I would not recommend this in a newer engine with DPF.Try some of this https://shop.cummins.com/CSSNAStore...P352l4rfXZLwwpN8Fum6IfbK1SUM1OGBoCtX8QAvD_BwE - it minimizes injector "knock" or simply add some ATF to the fuel will do similar.
I had a 87 Mercedes 300D and added a pint of ATF to the full tank and you wouldn't know it was a diesel it was so quiet.