I've spilt WVO in my truck bed and I've spilt biodiesel on my truck bed. I can tell which on I'd rather have INSIDE my engine...
Not trying to stir the pot but that is akin to saying you had spilled crude oil and MoGAS, then compairing the difference. Of course there will be differences between the 2. One had been processed and the other is raw product.
It is true that your unprocessed oil needs to be filtered and free of "free" water. Oil filtration is easy. The best found way is to use a centrifuge, although straining through various mediums An easy test for water is the crackle test:
Water Contamination Tests
a. Crackle Test
(1) Scope. Water contamination refers to the presence of free water or coolant in used lubricants originating from faulty cooling systems, condensation caused by improper operation, or careless contamination
of the oil system or storage containers. This test is a qualitative determination of free water in used lubricating oils, and is performed on non-aeronautical samples.
(2) Summary of Method. Water held in suspension by emulsifiers becomes audible (crackles) and visible as bubbles and steam when drops of oil are placed on a heated surface of approximately 300° to 350°F (150° to 177°C).
(3) Equipment/Apparatus/Materials.
(a). Hot Plate, thermostatically controlled.
(b) Thermometer. Surface thermometer (PTC, Spot Check R Model 572F, Fisher Scientific Catalog Number 15-170D, 18° to 260°C (50° to 500°F) or equivalent).
(4) Operation/Procedures.
WARNING
Testing must be conducted in a fume hood. Persons performing test must wear protective goggles and clothing and avoid direct contact with hot plate surface reaction.
(a) Heat hot plate to surface temperature of 300 to 350°F (150° to 177°C).
(b) Shake sample vigorously.
(c) Drop one or two drops of oil on the heated surface of the hot plate and observe the reaction.
(d) Record the reaction as positive (1), meaning bubbles were present; or negative (0), meaning
bubbles were not present.
(e) Wipe off the hot plate surface between samples.
(5) References/Guidelines.
(a) General. The crackle test indicates whether water is present. If the exact amount of water is desired, the Karl Fischer test for water shall be conducted .
1. The blotter spot will often indicate water/glycol content by poor dispersancy and a spot that remains wet longer than normal.
2. Spectrometric analysis can indicate the presence of coolant by the levels of sodium and boron, which are used as additives in coolants. If no new oil has been added to the system, an increase of 20 parts per million or more of one of these elements is reason to suspect coolant contamination.
3. Free water from condensation or external contamination will not be accompanied by high levels or sudden increase in sodium or boron. An exception to this is the analysis of marine diesel engine samples. When water is present in these samples, there will frequently be an increase in sodium levels because seawater is used as the engine coolant.
4. In addition to these tests, attention should be given to the oil’s appearance. A gray color or visible emulsion in the oil may be an indication of water or coolant contamination.
WAKE UP!! hahaha Straight from the book.
That stuff can be pretty boring.