Turned out the previous owner took care of it outside of maintenance. Fuel filter was totally clogged, we had to run engine cleaner through, get the tires realigned and some other stuff. Overall we went from 21mpg to 27mpg.
Additionally, fill the big primary fuel filter (spin-on type) with Liqui Moly Diesel Puge and put the rest in the tank. This should boost the cetane rating and clean up your injectors if they’re gummed up.
Drain tank and replace fuel filter, change oil, spark plugs
If you treat it right, the vw will outlast the Honda easily. If you're not going to be able to keep up with oil/ fluid/ dsg/ fuel filter etc... then you should get the Honda.
If you’re in the US you can pick up a FleetGuard PN# FF5159 (fits my 1996 Prado 1kz) from any local Cummins dealership or Cummins certified shops, you can also order them online.
The first thing he recommended was to change the fuel filter every second service, i.e. every 25k miles, instead of every fourth service as Honda recommends. My car still averages well over 60 mpg every year, and 2025 was the most economical yet, so I consider his advice to be tried and tested.
I had a Mann fuel filter from the previous owner so gave that to the shop. They called and said it was a fuel filter not an oil filter so they didn't need it.
replaced the original filter in a 2000 540i with 150k miles with a Hengst, no difference in performance whatsoever, but i feel better
fairly new Kia Sportage is at the dealership, because it’s struggling on acceleration. Dealership told me they want to swap out the fuel filters to see if that will fix the problem and charge me $400 to do so.
I have a 2020 Hino 335 I tried replacing the fuel filter with new one from dealer and it’s to wide and I can’t get it to spin on
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