I have been starting to try out different adittives in the tank. Power Service and MMO has been giving me about a 1.5 mpg increase over the past 4 tanks. I'm going to give this Lucas fuel conditioner a try next. Anyhow When I change the Fuel filter I usaually just fill it with Kero since its still around in an easy to pour container. Last time I changed the Fuel filter I filled it with MMO/ PS and kero just to see if i got any cleaning effect out of it. I have been Using this stuff called Sea Foam on most gas power stuff I have. I put some in the rabbit to try it out along with the PS and MMO. I noticed on the Can of Sea Foam they say to fill the Fuel filter with it for a super cleaning effect. Has anyone tried this?? or has anyone done this with something else and had good luck with it? A never was an additive guy until lately. Looks like I'm breaking even on the MPG savings and getting free insurance and peace of mind with the additives.

 

i just fill it with clean fuel and then prime it the rest of the way

 

i use seafoam everytime.

 

The correct practice is to put it in dry and prime from there. The way you're suppose to look at it is... any fuel you put in that filter manually, is unfiltered. Small contaminates are hard on the system.

Mike

 

Sea foam definitely cleans...but on an old tired engine be careful (ask me how I know). Sometimes it does too good of a job and cleans the carbon that was sealing the rings! . As for the fuel filter question. I put mine in dry, and prime it with the LP.

 

I fill it with nothing.

I let the lift pump do that all on it's own, nice and clean.

 

Same here.

MikeyB

 

Here also......

 

Not to be a smart ****, but what is to say that you aren't picking up crap out of your fuel tank by just letting the pump fill the filter. I figure if I have a can with diesel in it, it will be just as clean if not cleaner than what is being pulled out of my tank. And even so what difference does it make because it is a fuel filter that your filling so it will filter whatever might be in the fuel anyways. Am I just a or maybe I don't have a clue as to what the heck I'm talking about.

 

Why would we be picking up anything different from the tank than we would be under normal operating conditions?

I'd feel better adding fuel to the system (via the pump) with it closed vs. adding fuel from another container, with the lid open. Much more possibility of contamination in my opinion.

Now that we are talking about it, I've never understood the desire to put a concentrated dose of anything in the filter as a means of preventative maintenance, seems like a lot of risk with not much promise of reward to me.

 

[QUOTE=P.J;1300432]Why would we be picking up anything different from the tank than we would be under normal operating conditions?

That's kind of what i was thinking. And the filter is going to filter I'm not saying either way is best because I really don't know. I do know that when I do mine I just let the pump fill it. A can would be cleaner I would think but why would it matter. I don't know

 

[QUOTE=jazz_kt;1300439]Unless there are unknown contaminants in/and or on the can or it's spout.

 

Filling the filter once it's on assures the filter has sealed itself and no fuel will get by anywhere. If you do it by hand then there's more of a risk.

Don't get me wrong, I've filled them free-hand myself but was corrected here at school. It's better to do it right and when you're questioned if something goes wrong, you can rest easy that it wasn't you're own fault.

Mike

 

Once the filter is installed fuel can only enter from the dirty side of the filter media. If you fill it by hand chances are high you will be pouring fuel over into the clean side. Clean side is the center hole.

Caterpillar no longer recommends prefilling both fuel and oil filters for this reason.

 

How do you not prefill the oil filter? There isn't a way to prime you're oil filter, is there?

Wouldn't a dry installed oil filter make your engine run dry until it filled up?