- Joined
- Nov 29, 2009
- Messages
- 7,268
I go by hours. Every 500hrs on my 6.7 cummins. Book calls for 15k mile filter changes. It's always had a dark greyish blue color to it when I pull it out. Never noticed a difference. 11,000 hrs and 223k miles
Do you have to check it when running? I don't see any fuel in the bowlEvery 15,000mi for the engine side fuel filter. Davco fuel/water separator is based on restriction. As the media loads up, the fuel level in the bowl rises then it's time to replace when the level reaches the black/red band.
Do you have to check it when running? I don't see any fuel in the bowl
I see this happens to my cartridge oil filter media as well. When I dried it out it was darker on the bottom half of the filter. That's neat!Half of the filter sits in the housing so it will take more than 50% restriction for the level to rise to the bowl.
Davco units doesn't use the whole filter media at once. The level rises as contaminants collect from the bottom up.
Also note that there is no lift pump in this application.
It drops down to the bottom when it's off.I see this happens to my cartridge oil filter media as well. When I dried it out it was darker on the bottom half of the filter. That's neat!
My 6.7 cummins has always had a bit of an occassional shake to it at idle. Hard to say if it's a fuel issue or what, but I have noticed it can run smoother or rougher from tank to tank. Sometimes it runs so smooth you cant even tell its running. Never did test the fuel, but it's a well known fact that our fuel has less lubricity and lower cetane, dirtier etc compared to say Europe.Interesting! Do you notice a difference in fuel quality between stations? Is algea a problem for some of you?
It's no issue for me & we don't have "Top Tier" rated diesel fuel. We do have a range anywhere from 5% - 20% Bio-diesel in the USA. I mostly use closer to 5% bio-diesel & vary where I get fuel so it's not just one single source. This is my two fuel filters that I ran for 25249 Kilometers. They came out looking great compared to some I've seen posted here.Interesting! Do you notice a difference in fuel quality between stations? Is algea a problem for some of you?
Interesting! Do you notice a difference in fuel quality between stations? Is algea a problem for some of you?