can u tell a diff with a stock replacement K&N filter for a 5.4L F-150??? my stock filter is dirty bad, and my dad has a K&N filter for a F-150 he said he would give me.. can u see any HP or MPG increase with just this over stock??

 

I have no idea. I put a K & N in at about 200 miles. I like it as it saves me a lot on filters. It cannot have hurt my gas mileage as I get very good mileage.

 

No, it won't help your gas mileage or hp unless you have done some other mods to your truck. And if you run your truck in dusy conditions regularly, you DON'T want one of these filters, and you especially don't want to run napa filters. You need to run your stock motorcraft filter. It is the best filter out of all of them. If you run anything else, your engine will be eating a lot of dirt. But just for kicks.... If you don't believe me... Just take your air filter out and drive around for a while. (on pavement) You won't notice any difference.

*edit*- I just read your profile which says you're a farmer. I am too, and I promise you don't want a K&N filter in your truck. If you stayed on the road all the time, it'd probably be fine, but since you're in the dirt a lot, you need to stick with motorcraft.

 

thanks for the help guys,, yeah, iam out in the fields alot, and in dusty hay fields. so i understand what u mean about dusty conditions..

 

I'm in the same boat as you. I go through several motorcraft filters a year. At least 3-4. Usually 2 during the spring (planting and plowing) and 2 during the fall (mostly picking peanuts).

 

I have been running K&N's for years and they are way better then stock Motorcraft filters. If you are running in very severe conditions you need to clean the K&N every couple thousand miles. Over a few years the K&N will more then pay for its self. After reading your post I would have to say that your someone that has no clue when it comes to maintaining your truck.

 

Even in extreme dusty conditions, a properly oiled K&N will out perform and out filter a paper filter (IMO).... Notice, I say PROPERLY OILED...... I feel most people that have 'issues' with the K&N either clean them TOO much, don't put enough oil on them or put TOO MUCH oil on them....

I spent a solid week 'eating dust' while on vacation in a very rural part of Idaho (Kelly Creek). When I got home, I checked the filter and it was literally 'caked' with dust.... According to the INSTRUCTIONS for operating the filter in dusty conditions, it stated to "lightly brush off the excess dust off the filter and then re-oil accordingly" A full 'cleaning' is not necessary folks!

My brother in law who was also on the same vacation, ate the same dust as me, but he had a standard paper filter.... He had to replace his basically brand new filter on the way home, because his truck was running so bad on the trip home..... HUMMM..... When I "white gloved" the intake track after the filter on my truck, it was CLEAN! No dust residue at all.....

I followed the 'dusty condition' instructions for the K&N and it was fine!

I have only 'totally' cleaned my K&N twice in the FIVE years and some 90,000 miles of use.... I have given it an extra ' light coat' of oil in between cleanings and I have NEVER had a MAF issue. To this day, I can 'white glove' the intake and not get any residue.....

I know this a free forum and you can't believe everything you read on them, and I don't really care if you believe me or if you think I'm full of '*****'.....

In my own experience, I have had zero issues with the K&N (and I have had zero issues with running Bosch +4 spark plugs too!) but that's a different story! To each their own and to each their own experiences.... I guess I've just been lucky! Oh, the truck has 157,000 miles on it now and running just as strong as it did brand new....

Mitch

 

Whatever you say, but I know that I ran my truck with a k&n for about 6months and it didn't stop up with dirt.(it had a light coating of dust on it when I took it out) Also my TB was covered with a fine film of dust after I quit using it. The napa paper filter I was using was just as bad. I had it in the truck for a year and it never stopped up. It looked as good as new when I took it out. My dad was using the same brand paper filter in his truck and he was having problems with his TB sticking on his V10 (he found out it was caked with dirt).
We both switched back to motorcraft and haven't had a problem since.

I'm sick of people on here bashing others about their experiences when they don't have a clue as to the other person's background. Everybody's entitled to their own opinions. You think they work good. Fine then. I'm not gonna start making fun of you for it. I wish some people on here would stop acting like children.

It doesn't get any dustier than a peanut field. And I used the K&N right out of the box (it was pre oiled).

For everyone that uses them. Great. They probably work fine, especially if you don't get in a lot of fine dust. IMHO But, they don't work well for me, and I wouldn't recommend them for somebody that works in dust.

 

what oil do you use for your k&n

 

When I had mine, I used a K&N filtercharger kit. It comes with K&N filter oil and cleaner.

I still got it, come to think of it.

Now I use the K&N oil when I run out of WD-40

 

i have had a K&N on my stang for over 13 years. it works ok and i have had no problems with it. that said, on my truck its just easier for me to just put a new paper filter in when its dirty.

 

I totally agree. Had one in my Mustang and of course, over oiled it ruining the MAF. Had one in my 99 F-150 and didn't notice any change in milage or power. I can see if an engine was modified but on a stock motor (mine) I can't be bothered to "properly oil" it, have the chance of having to replace a MAF. I like just dropping a new, clean filter in and not worry about having to oil anything. Just my .02

 

I think the motorcraft filters have an oil coating on them. They act like it. Mine is always caked up with dirt when I replace it and it has a wet appearance.