Powerstroke question....

[Highbeam]

I put 8,000+ miles a month on a diesel truck, can't imagine why they would put a substandard air filter. no quicker way to eat the motor.

Because the producers of these aftermarket air filter systems claim higher flows and more HP. Kids, and even some adults, put these oiled filters on everything in hopes of better power and since they are washable some folks think they will save money vs. replacing the paper filters.

Yes, you will destroy the very very expensive diesel engine very quickly with poor air filtration. Diesels go through much more air than gas engines since there is no throttle plate and with force feeding by the turbo. Every time the intake valve opens it gets a max fill.

The Ford air filter for the 6.0 engine is reportedly quite good.

Oddly, the OEM designs and even the Ford AIS talked about earlier are all cold air intakes meaning they draw air from an area other than the hot engine compartment. Most of the aftermarket filter systems are an open element filter drawing hotter underhood air. I don't think it really matters how hot the intake air is on a diesel engine since the intake air will be pressurized by the turbo (heat added) and then cooled by the intercooler. I would be more concerned that the "cold air intake" is some sort of lame non-paper element that allows poor filtration to accomplish high flow.

 

[Diamondpilot]

Because the producers of these aftermarket air filter systems claim higher flows and more HP. Kids, and even some adults, put these oiled filters on everything in hopes of better power and since they are washable some folks think they will save money vs. replacing the paper filters.

Yes, you will destroy the very very expensive diesel engine very quickly with poor air filtration. Diesels go through much more air than gas engines since there is no throttle plate and with force feeding by the turbo. Every time the intake valve opens it gets a max fill.

The Ford air filter for the 6.0 engine is reportedly quite good.

Oddly, the OEM designs and even the Ford AIS talked about earlier are all cold air intakes meaning they draw air from an area other than the hot engine compartment. Most of the aftermarket filter systems are an open element filter drawing hotter underhood air. I don't think it really matters how hot the intake air is on a diesel engine since the intake air will be pressurized by the turbo (heat added) and then cooled by the intercooler. I would be more concerned that the "cold air intake" is some sort of lame non-paper element that allows poor filtration to accomplish high flow.

We can argue which filter is better for ever. Its came up time and time again on this site but every piece of equipment I have owned since the late 90's other than my tractor has had some sort of aftermarket filter. MAC or K&N usually. I have had 4 diesel trucks in that time and about 15 other vehicles and never a single issue. I trade most in at around 120,000 to 150,000 miles so they are no garage queens. A few were keep for less miles, and one as few as 18,000 but thats not the norm.

Never had a single engine/turbo problem. Heck, I have not had a valve cover off since 1988. Now I have had injector issues on one truck, tranny issues on another, power steering pump and AC compressor also. But none of these issues would have a thing to do with a air filter.

Chris

 

[flyingcow]

Thanks for the input. this has a K and N filter. All enclosed. Got a pic of top of motor, looks good. Run Carfax, looks clean, the mileage adds up. It has 149,000. Called ford dealers that have serviced, they have shown no tampering with odometer. The dealers were ones off of carfax listings. looks like a good ride. Will dicker with the guy soon.

Anymore thoughts?

 

[Diamondpilot]

Will dicker with the guy soon.

Anymore thoughts?

This reminds me of a joke.

Guy is driving down the road and he sees a Cherry GTO with a for sale sign in the window. Anyway he stops and is looking over the car when a man comes out of the house and approaches him. The guy looking at the car ask to take it for a test drive and when the get back he ask what he is asking for it. The man selling it say $25,000. The man looking ask if he will take $22,500 cash. Man selling says he can't do that because its his wife's car. Man buying says well let me talk to your wife then. Man selling says she is at work and will not be home till 6pm. Guy buying says well I will be back after 6 and "dicker" a little. Man selling says that won't change the asking price of $25,000.:laughing::laughing::laughing:

Chris

 

[flyingcow]

Funny.
:thumbsup:

 

[56FordGuy]

Thanks for the input. this has a K and N filter. All enclosed....

Anymore thoughts?

Take the top of the air filter box off and check for dirt inside. Regardless of anecdotal evidence, oil/ gauze filters do allow more to enter the engine; more air, and dirt. Even if they worked well when properly maintained, you don't know how well the last guy cleaned and oiled it.

A turbo for that truck is about a grand, just had to get one for a guy. Wear and damage to cylinder walls and valves is a lot more. If the inside of the intake tube is clean (the part going to the turbo), you may or may not be alright. If you find even a hint of dirt, walk away.

Look at the oil pan. The pans on these trucks have a problem with rust, and rust eating through the pan. Replacement of the oil pan requires removing the engine, due to a frame crossmember that prevents taking it off from the bottom.

 

[Soundguy]

are we still talking about a 7.3 psd? I think that's the first I've ever heard of any oil pan pandemic problem??

soundguy

 

[56FordGuy]

Yes, still talking about the 7.3.

I wouldn't call oil pan rust issues a pandemic, but it is a rather common issue that's aggravated up north where they use a lot of salt and the like on the roads in the winter.

If you do a web search for "7.3 oil pan" you can find a lot of folks talking about it. At one time, I heard someone was trying to design a two piece oil pan that could be installed without removing the engine.

 

[sandman2234]

I have heard about some problems with oil pans rusting, but have never seen one. Must be, as mentioned, a saltbelt problem.
David from jax

 

[Peacock]

Because the producers of these aftermarket air filter systems claim higher flows and more HP. Kids, and even some adults, put these oiled filters on everything in hopes of better power and since they are washable some folks think they will save money vs. replacing the paper filters.

Yes, you will destroy the very very expensive diesel engine very quickly with poor air filtration. Diesels go through much more air than gas engines since there is no throttle plate and with force feeding by the turbo. Every time the intake valve opens it gets a max fill.

The Ford air filter for the 6.0 engine is reportedly quite good.

Oddly, the OEM designs and even the Ford AIS talked about earlier are all cold air intakes meaning they draw air from an area other than the hot engine compartment. Most of the aftermarket filter systems are an open element filter drawing hotter underhood air. I don't think it really matters how hot the intake air is on a diesel engine since the intake air will be pressurized by the turbo (heat added) and then cooled by the intercooler. I would be more concerned that the "cold air intake" is some sort of lame non-paper element that allows poor filtration to accomplish high flow.

Agreed. When I was a Ford tech we had a bulletin that stated we could void engine warranty on diesels with k&n type filters. Most people don't maintain them at all and the top end of the eingine just gets sandblasted.