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Fuel filter question

Crankme69

Crankme69

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My filter was changed back now coming up on 20K miles ago. I'm not have any issues with it at all. On my 7.3 I always ran em until the filter DP light would start coming on, but in that I ran a bunch of chit mixes that I wouldn't dare attempt on the 6.5.

So 20K should I change it this time when I dump the oil? Does this have a DP light or just the water in fuel light?

TIA,
69
 
Before I put in my prefilter, I did mine every 6k miles, which was only 3 times. Now that I have the 12 micron before it, I might go twice that unless pressure suffers.
 
C69 the only way to KNOW if it needs to be changed is via a gauge to the IP looking for loss of lift pressure or installing a DP switch to monitor increased vac across the filter, I once got a bad load of fuel on a "just installed" filter <3K miles on it that robbed me of power,

A mileage driven change recommendation is just that, a recommendation as one can get some "bad fuel" at any time, 20K is just as good/bad as any interval you could pick.

Before adding the 10 mic Racor and vac switches I'd just run until performance got bad and carry a new spare with me at all times, once it started bucking under load or getting crappy acceleration I'd change the filter.

Now I carry same spare OEM plus spare Racor, if my high DP switch starts blinking my red LED on hard accel I know I'm needing to change it, last time I changed mine was 30K miles ago, I'm still going strong with those 30K filts.
 
Odd to me why GM did not put some device either electronic or a "pop up tell tale" indicator so one would know the filter was clogged.

Maybe you could go to a boneyard and find a old switch or go to part store and find it since you know what to look for in a part book, let us know the p/n because the one Racor sells is mega $$$ now for a simple vac switch
 
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