Screw-on style fuel filter

[tom lovinggood]

Hello--last year I had a screw on type of fuel ffilter. How often should that filter be changed? Thanks in advance
Tom Lovinggood

 

[Mullaney]

Hello--last year I had a screw on type of fuel ffilter. How often should that filter be changed? Thanks in advance
Tom Lovinggood

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Hi Tom,

You will get a dozen different opinions, but if you don't drive it every day you can't really go by mileage. MY OPINION is that a filter is relatively cheap. Replace it once a year. Pick a day. Do it on the same day or weekend every year. Then add the quart or two of oil, and you should be good. Naturally, if you happen to be driving a few thousand miles a year - every few thousand miles is a good way to schedule your changes.


Tim Mullaney

 

[ezgn]

.
Hi Tom,

You will get a dozen different opinions, but if you don't drive it every day you can't really go by mileage. MY OPINION is that a filter is relatively cheap. Replace it once a year. Pick a day. Do it on the same day or weekend every year. Then add the quart or two of oil, and you should be good. Naturally, if you happen to be driving a few thousand miles a year - every few thousand miles is a good way to schedule your changes.


Tim Mullaney

I don't drive mine more than 2-3 thousand miles a year. I change mine about every 3 years. I don't know if it needs it more often, but I have never had water in the fuel, and the ones I've cut open looked clean inside.

 

[Skinny]

I've had mine on for ten years. That's maybe 20,000 miles. Never been changed once. Probably many years past my comfort level but I have spares in the truck and it's waaaaay down on the list of things to do.

 

[tom lovinggood]

Skinny--I wouild presume that when I do change the fuel filter, I must fil it with diesel fuel first?

 

[Skinny]

Skinny--I wouild presume that when I do change the fuel filter, I must fil it with diesel fuel first?

If you have a primary and secondary you would only fill the primary. If you only have one spin on then no.

The theory is that when you fill by hand any contamination in the fuel is bypassing the element and going into the injection pump.

Sure there is variation depending on if the filter is a standard vs. reverse flow ie. which way does the fuel go in the filter.

But a better habit would be to figure out how to prime the filter and pump without filling the filter. Whether that is compressed air going into the filler neck or putting a hand primer on the filter head.

I'm sure it would be fine but it's probably a bad habit with a diesel filter since we are taking microns here.

What do you have for a filter?