I just saw the video on changing out the trans pan and filter to an '08 model. Was just wondering can the external filter be taken out or service after the change? Just leave the filter out of the canister.


Thanks in advance.

 

You got it. Leave out the cartridge filter when installing the 08 pan and filter.

 

I would bet the external filter does a better job of filtering. It's a bypass filter, much finer. The one in the pan that filters everything can't possibly filter as small of particles. Why not leave them both?

 

The 08 filter does 100%--way different then the stock 6.0l filter. The external only sees about 10% at most and thats not very often. Iirc

2006 F350 4X4

 

You're missing the point. Do you know what a bypass filter is? I don't know what the micron rating is on the Ford filters, but bypass filters only filter a portion of the fluid because it is such a fine filter. The full flow filter has a larger micron rating, that's the only possible way for it to be "full flow". It filters the full flow but it does not pull out the smaller particles the bypass filter can get. If you tried to push the full flow through the finer filter, it would cause too much of a restriction.

Lots of people install both full flow and bypass filters on their engine. Both filters cannot do the same job.

 

I'll bet you're wrong. The bypass filter is NOT finer than the updated filter. Also, the updated filter filters 100% of the fluid. The bypass filters 10% of the cooler flow. The cooler doesn't see 100% of the flow, and when the trans is cooler than 165F it only sees 10% of the normal flow. And only 10% of that 10% is filtered.

I don't see any need for replacing the cartridge filter when installing the updated pan filter.

 

I guess that ends that argument!

 

I have been curious why the push towards the internal filter. I wouldn't doubt the 6.0 outnumbers the 6.4 3:1 in total production and with so many 6 liters with hundreds of thousands of miles with the stock toilet paper filter it can hardly be an issue.

Just sayin'

Not much space on a 6.4 for the TP filter either...

Josh

 

Do you know what the micron ratings are? Don't tell me I'm wrong if you don't have information to share. With engines, standard oil filters are usually around 20 microns. Bypass filters are in the 1-2 micron range. The best filtration comes from having both styles.

If what you say is true than the original bypass must have been of a really crappy design. It's almost never turned on AND it doesn't filter down very fine?

 

Mark keeps saying there was some problems with the solenoids but will never elaborate. I've never heard of this solenoid problem popping up in the forums. Trans problems are quite rare to be honest. I've got two 04s with 200k and the stock filter (that never does much) and they work fine. I don't think either one has ever been serviced much.

Mark seems to have a habit of posting "facts" somewhat out of context and then running away without explaining.

High filtering in the trans is more about saving expensive fluid and making it last longer than making the transmission last longer. A lot of (older) automatic transmissions don't have much more than a screen to filter out chunks and a magnet. There is no combustion in there anyway so there isn't as much to filter out.

 

F357 your posts continue to be inaprorpiate to other users. I take exception to the way you respond to others. You have only been a member since Dec of 2014 and you have 164 posts. Don't you think it would be more appropriate to be a bit more respectful. Especially when it's Mark for example. If you can't say something nice, try not saying anything. Just sayin. To the mod, if your watching, this post can be shut down now if you like.

 

I'm just asking Mark to post information. If you don't like my posts you can click on the report post button but I'm not breaking any rules. The amount of time I have been a registered member here is not relevant. I've talked to several of these people (including Mark) for years on other forums. To answer your question, no I don't think it's appropriate that I be more respectful when somebody tells me I'm wrong and then can't/won't explain why.

To be honest I don't like your posts either. But you're free to post them. There is no reason to close this thread. Valid questions have been asked.

 

No, I don't remember the micron rating on either filter. I didn't work on the filters. I do remember talking with the engineer responsible for both filters. He told me that the new internal filter had a lower micron rating than the external filter. You are welcome to believe that or not. I really don't care either way.

I don't remember saying there have been problems with the solenoids. Where did I say that? Sometimes I have said that a problem described could be a sticking solenoid. Better filtration will help with that.

 

Right there.
Is there any particular reason they changed the filter location other than the old one didn't fit anymore? People on the internet think the in pan filter was added because the other one didn't do something right.

I'm not able to find any good ratings with google for either the pan filter or the bypass filter. I see some vague references to the bypass filter being 2 micron but I can't really be sure. I would be sure the in pan filter isn't 2 micron.

If the stock bypass filter is indeed not a very small rating, then yes, get rid of it, but, you (or anybody) would still be well served by an aftermarket bypass type filter in the cooler line. (even if it doesn't get all the fluid)

 

The bypass filter was replaced by the improved in pan filter to improve the filtering in the transmission.