My new/used SPF.

[madmaxx]

FL-1hp is a horrible choice. Bypass open at 19 psig, you would be starving the engine for oil if an issue arised. Most are 8-9 psig. remember it is differential across the filter, my testing at 40F with fl-1a showed 2 psig at 4k rpms so 99.9999999% not an issue. You going to spend $15 on a filter get the Royal Purple not the FL-1HP

[patrickt]

If that guy has only been putting 80 miles a year on it then the gas might be pretty old. I wouldn't even bother tuning it until you've put enough miles on it that you've filled the tank up twice. If for some reason the engine doesn't seem to be running right, the gas (and chunks 'o crap from it in the carb) would be my #1 suspect. In fact, I'd be surprised if you didn't have to blast out your carb. I have to do that after I pull my car out every spring and it's only been sitting about five months (with StaBil in it too, btw). It's the old ethanol/zinc clog problem that we've written about many, many, many times.

[Got the Bug]

Originally Posted by madmaxx

FL-1hp is a horrible choice. Bypass open at 19 psig, you would be starving the engine for oil if an issue arised. Most are 8-9 psig. remember it is differential across the filter, my testing at 40F with fl-1a showed 2 psig at 4k rpms so 99.9999999% not an issue. You going to spend $15 on a filter get the Royal Purple not the FL-1HP

I guess somebody better tell Roush about the FL1-HP. I won a Roush filter in raffle at a car show...I'm pretty sure it's a rebranded FL1-HP.