Filtering oil externally

newbury · Sep 19, 2012

I've been reading a little about bypass oil filters.
And it occurred to me that for the cost of a system for my F350, my TDI, my Civic, my E350, my Elantra, my Kubota that it would be a lot cheaper to just have 1 bypass filter system for ALL of them.

I'm thinking of something like a vacuum system to suck the HOT oil out the dipstick through an appropriate filter and into a tank. Then after it sucked and filtered all it could get just pump or pour the oil back into the vehicle.

So the scenario would be drive the vehicle till you got the oil hot, get home, pop the hood and hook up the system, filter the oil and put it back in.

It seems that doing something like that occasionally would be as effective as bolting on a system that did it all the time. With the synthetic oils it seems 20,000 miles would then be a reasonable oil change interval for all but the Kubota.

Comments?

Here's a Blackstone report for a guy who gets about 20K on dino oil in his F350 http://springerpop.net/F350/images/Blackstone-09.jpg

/edit - This would be in addition to the regular "factory" filtration system.

dschuffert · Sep 19, 2012

This is an interesting concept. I don't see the benefit of doing this once in a while. I have a 2011 F250 with a 6.7L diesel. I use the Amsoil bypass filter system. Prior to this I had a '05 F250 with a 6.0L diesel. On the 6.0 I did 15K mile intervals between oil changes. My Blackstone reports came back fine. The biggest issue with the 6.0 was how the injectors sheared the oil. The 6.7 is newer and I have been working my way up the mileage interval. I just sent in my latest sample with 12K on the oil and waiting for the report to come back. The biggest issue with the 6.7 is the fuel dilution due to the way the regeneration process works for the DPF cleaning.

The report you link in your post is missing the bottom half of the Blackstone report that shows fuel dilution, TBN, etc. It would help if he posted that too.

oldnslo · Sep 19, 2012

Unless I am missing something in your post I am confused on how occasional filtering will be better than continuos? Continuos filtering keeps the oil clean all the time while occasional filtering would only have it clean once or is this meant to be used in addition to the factory filters?

It is much easier to keep a reservoir clean that it is to clean up a dirty reservoir.

newbury · Sep 20, 2012

oldnslo said:
Unless I am missing something in your post I am confused on how occasional filtering will be better than continuos? Continuos filtering keeps the oil clean all the time while occasional filtering would only have it clean once or is this meant to be used in addition to the factory filters?

It is much easier to keep a reservoir clean that it is to clean up a dirty reservoir.

I did mean in addition to the regular continuous filtering. The "factory" filter does down to about 20 microns. "Bypass" filters go down a lot further, for example the Amsoil EaBP filters down to 2 microns.

Diamondpilot · Sep 20, 2012

In my opion, oil is cheap. Especially when you are talking about a $10,000 diesel engine.

I just feel better changing my oil. I know it never really wears out but additve packages do and it gathers dirt and impurities that the consumer like me and you will never filter out.

Chris

newbury · Sep 20, 2012

Diamondpilot said:
In my opion, oil is cheap. Especially when you are talking about a $10,000 diesel engine.

I just feel better changing my oil. I know it never really wears out but additve packages do and it gathers dirt and impurities that the consumer like me and you will never filter out.

Chris

It's not so much the cost of the oil. It's all the rest and the work involved. I've 2 7.3's and a TDI that can really use the fine filtering to extend their life beyond mine. One system would work for all. The installation alone in the TDI is a bear because of the cramped engine compartment.

And if I can readily have my oil interval at 20,000 miles that would mean 1/4 the cost of oil, which 15 quarts ran about $100. Blackstone only costs about $25.

Reading some of the reports on bypass filters it seem that filtering down to 2 microns is very effective in keeping all the engines running better.

Egon · Sep 20, 2012

At what micron level do the filters start removing the additives?

clemsonfor · Sep 20, 2012

Diamondpilot said:
In my opion, oil is cheap. Especially when you are talking about a $10,000 diesel engine.

I just feel better changing my oil. I know it never really wears out but additve packages do and it gathers dirt and impurities that the consumer like me and you will never filter out.

Chris

Exactly my thoughts!

Im thinking Why? Unless your runing a bunch of big trucks in a fleet and are trying to squeeze every penny you can by going to crazy oil change intervals why not just dump your oil every 6-10k for syn oil and call it good?? I can buy a mobil 1 oil change special on sale for less than $30 thats with a mobil 1 filter too. Unless you drive 100k miles a year it dont seem worth the effort and risk to me.

newbury · Sep 20, 2012

clemsonfor said:
Exactly my thoughts!

Im thinking Why? Unless your runing a bunch of big trucks in a fleet and are trying to squeeze every penny you can by going to crazy oil change intervals why not just dump your oil every 6-10k for syn oil and call it good?? I can buy a mobil 1 oil change special on sale for less than $30 thats with a mobil 1 filter too. Unless you drive 100k miles a year it dont seem worth the effort and risk to me.

Where can I get a mobil1 oil and filter change for $30? 15 quarts plus of oil.
I've been using Rotella T6 at about $23.76/gallon w/ tax and the truck uses about 4 gallons with me rounding that to $100.

The regular filter only goes down to 20 microns, and I guess if you don't plan on keeping the vehicle long it's ok.