Prefiltering twice with a 0.45 will make oil thinner?

[master.on]

While prefiltering is great to prevent vegetable particulate matter from clogging the 0.22 filter
it doesn't make oil any thinner, does it?

Just curious as I read it in 2 different boards.

 

[grey]

it doesn't make oil any thinner, does it?

Never tried it, but I would have to think it largely depends on the grade/filtration level of the oil you purchased?

The more large organic materials in the oil when you start, the less after filtering, but once you have passed a filter size once, no additional "stuff" should be left to increase viscosity...

 

[vorcellian]

no, how would it make it thinner?

only thing it might do is make filtering through the 0.22um easier, but that's a dumb way of doing things, imo, since you're filtering twice, and the 0.22 makes the 0.45 meaningless

 

[pharmasource]

for pre-filtering is not needed 0.45 filter, but 1. filter . Mechanic particles ( vegetable parts etc ) are not so small like bacteria.
Anyway, different in viscosity between pre-filtered and no-prefilterd oil is negligible - if your filtering volume is not big.