Filtration Q

[Labhunter]

I heard somewhere that a carbon filter is needed in the filtering process. Does anyone know if this is a need or a wives tail. I filter through several filters taking the oil down to 75 microns. Then it gets pumped thru a 30 micron filter and a 2 micron carbon filter on its way to my water/oil heater where it is heated for a few hours and then cools and settles for 48 hrs. Then, after bleeding off the water and anything else that got by the process, it is pumped back through the two filters and on out to the truck where it passes through a water block 5 mic. filter and into the truck.
I suddenly began having problems with the carbon filter. It will not let the oil go past it for some reason. Also, the carbon filter breaks down fairly quickly and I would like to do away with it if possible. If I discard the carbon filter and replace it with a 20 mic. filter and then on to the 5 micron, would that be ok, or do I really need the carbon filter?

By the way, I am talking about vo.

[MtnOilRIG]

I haven't heard of the use of a carbon filter in filtering VO so I'd say you can take it out, BUT you probably need to replace it with a 1mic or 2mic string filter since you pump back through these filters after heat-n-settle. String filters are not absolute, but cheap and fairly effective, $20 housing and $2 filters. Can you put 10 mic filter media in your 30mic filter housing?

I settle a longtime and pump through a 10-5-1 mic string bank before I spin the batch and the 5 mic filter has always plugged before the 1mic or 10mic...if that says anything about the size of the particles in my oil?

Veg-on,

[Labhunter]

Ok thanks. I'll see what other filters l can find.

[Jason SVO]

You can use the typical canister or spin-on filters used on diesel trucks. Donaldson makes a nice 10 micron absolute filter# p555823
I've polished a lot of oil using this badboy. The Donaldson p551000 is a similar filter but has the water block in addition.

Jason J
WVO Designs

[ParkCity.PSD]

I thought the p555823 had water block??

[Jason SVO]

Originally Posted by ParkCity.PSD

I thought the p555823 had water block??

That is a common misconception with that filter. Per Donaldson, the p555823 does not block water.

Jason J
WVO Designs