Oil change interval

[raydav]

I have been aware of add on, bypass oil filters for a few decades. The first I encountered were for gas engines and used a TP filter. The bypass concept assumes there is excess oil volume available that can be channeled to a filter parallel to the engine oiling system without decreasing the volume of oil that is going to the lubrication channels.

Is the existence of available excess oil volume always a true assumption?

 

[79jasper]

Well, most bypass systems being a "bypass" not "full flow," they also have a restriction. So you aren't really losing anything. Won't affect the rest of the engine.
Those tp units (frantz) are still popular.

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[Thewespaul]

With a restricted bypass, a turbo feed will be “robbing” more oil than the bypass will.

 

[raydav]

With a restricted bypass, a turbo feed will be “robbing” more oil than the bypass will.

My remote turbo feed is 0.060" dia. So I can just filter that, right.

 

[Thewespaul]

Yes that would be fine, but don’t put it before the turbo. The filter is so fine it will starve the turbo. You can y off of that line and use the supplied restrictor and be fine.

 

[Mr Dieselcraft]

Sorry I am not allowed to respond until I have been given clearance from the moderator.

 

[Macrobb]

Sorry I am not allowed to respond until I have been given clearance from the moderator.

Just to check(with any mods who may be watching), but as a non-sponsor he could answer technical questions/answers like anyone else, just not 'advertise' his centrifuges, right?
So any general centrifuge answers would be fine, but anything specifically mentioning his OC-25 by name or his company would not be?

Edit: also, mod question but I can't PM him?

 

[79jasper]

but as a non-sponsor he could answer technical questions/answers like anyone else, just not 'advertise' his centrifuges, right?

For the most part, yes.
But posting link/pdf to said product, probably not. (And as he does have a link to his site on his profile)

Some of the little guys go through a lot to become a sponsor. So not really fair for others to come along all willy nilly posting about their product. Make sense?

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[raydav]

Yes that would be fine, but don’t put it before the turbo. The filter is so fine it will starve the turbo. You can y off of that line and use the supplied restrictor and be fine.

If you are suggesting a Y off the line to the turbo after the 0.060 turbo restrictor, that will not play because I have tuned that restrictor and anything taken from that line would be taking from the turbo.

I don't find any info on the "supplied restrictor". I assume it is a separate part. What is the orifice diameter?

 

[Thewespaul]

If you are suggesting a Y off the line to the turbo after the 0.060 turbo restrictor, that will not play because I have tuned that restrictor and anything taken from that line would be taking from the turbo.

I don't find any info on the "supplied restrictor". I assume it is a separate part. What is the orifice diameter?

Which kit are you looking at? I like the amsoil kits, you would tee before the restrictor

 

[chris142]

An IDI can weigh 9k? Is it a dually crew cab?

My 87 extended 250HD is (likely incorrectly) is listed as having an unladen weight of 4,662 on my Arkansas vehicle registration slip. That's probably a 1/2 ton, v6, 6ft bed, regular cab weight?

Whenever I move back to Washington state (I got the truck after I left) I hope they go by that, rather than their own weight listing. The heavier the truck, the higher the reg fee is. Plus if a diesel is over 6,001lbs, it's required to have an emissions.

my 87 F250 weighed #6500 at the cat scale. I evenvstripped it down as much as I could, even took out 1 battery.Had to weigh it to register it. No emissions test for mine in calif.

 

[raydav]

Which kit are you looking at? I like the amsoil kits, you would tee before the restrictor

Dieselcraft Model OC-25

I don't find an Amsoil centrifuge.

 

[Thewespaul]

Amsoil Bypass kit, they don’t make a centrifuge that I know of

 

[chris142]

Has anyone sent in oil samples? Could kinds give us an idea as to how long we can let the oil go. I do mine around 3k.

 

[saburai]

The centrifuge is about $100 more than the Amsoil bypass filter kit. Is it worth it? What are the pluses and minuses of both? Mechanical complexity, chance for something to fail, Etc.