Primary fuel filter

[JimT]

(02-18-2020 )MAScontractingllc Wrote:  Thanks for the quick response

We don't have the Davco only the factory Paccar filter
We are using 10 micron fleetguard filters in the Paccar housing
Tanks appear to be clean

I thought I read somewhere that the fuel lines could be giving up the ghost?
I don't know if they break down inside so to speak after 500K

The fuel lines could do that, though it's more of an issue with age than with mileage.

Not sure what might cause your issue, but it seems to me your oil drain interval is too long. If you're only getting 6.4 (which isn't bad for hauling containers) then I think you should be looking at 10-15k interval, especially with the egr intact. I'm sure Rawze will chime in about that.