Additional fuel filtration / injector replacement poll

[Cliff Lewis]

No added filters
215000 on original injectors
Loved it till all #### broke loose now not so much
I heard from a chevy mechanic that his friends lly went 1 million miles and motor never touched ?

[Mark Rinker]

2009 K3500 - Crew/Long SRW

285,000 miles on original injectors and going strong. No additional filtration, lift pump, etc. Fuel sourced at random pumps all over the US and Canada. Fuel additives run '...more often than not' but not one brand. Those used including Howes, Power Service, etc.

Due to constant towing, the total gallons of fuel run through this pump and injectors could easily be 80% more than typical - i.e. lifetime MPG is probably between 11 and 12mpg.

Go figure that one...

[chessy56]

'01 LB7 in a 2500 HD P/U, nearing 440K miles.

OEM injectors lasted ~185K miles. On the 4th set now which I installed myself (along with new feed tubes to the injectors).

Added a 2nd filter as a primary, a Kennedy lift pump and a CAT UHE filter conversion on the OEM head somewhere between the 3rd and 4th set of injectors. 4th (current) set of injectors are still running after ~75K miles. While I smell a heavier odor to my exhaust now, balance rates are still within spec (worst is about -3.4, in Park, on cylinder #7), but it's not smoking at the tailpipe. Yet.

I use a Fleetguard FS1000 filter as my primary just after the tank (and before the lift pump), and use a CAT 364-5287 UHE filter before the HP pump. (In retrospect, I should've purchased another OEM filter head with the heater and used that with the primary as extremely cold weather leads to my primary clogging.)

Did it help? The benefits may be intangible, given that the replacement injectors for the LB7s are of lesser quality and just don't seem to last like the originals. But, any extra life I can squeeze of of them is a plus to me.

[SoTxPollock]

Purchased a 2020 LP5 and wondering if anyone knows if they have improved the fuel filtration on this versus the older ones. Noticed GM has located the fuel filter close to the fuel tank underneath the truck.

[spongebob]

400400 miles on my stock 06 K3500 LBZ, original injectors, fuel from everywhere..fuel filter changed when I received a “change filter notice”..mostly ac delco filters. I’m keeping my fingers crossed.

[EdHale]

I change my fuel filter every 10,000 miles, have replaced 1 injector at approx 170,000 miles. Currently have 211,000 on the clock. Use Baldwin filters and have since the first filter change.