Why warm oil for analysis??

[PRyker]

I was told by an Amsoil dealer that whenever I send in an oil sample for analysis to make sure I take a sample when the engine oil is at temp and only after the oil has had a good chance to recirculate through the engine and filter.



I know it is common sense on the recirculation but why does the oil need to be at temp? Does it "suspend" the crap in the oil better for sampling purposes?



How do you guys sample and where do you sample from? I have a bypass filter so I sample from the oil filler cap as that is my return. I used to sample right at the oil pan when changing oil before I had the bypass filter mounted.



As talked about in another thread, if I am taking two samples (one for a backup) is there any particular type of container I should store the sample? I would hate to "contaminate" my sample with residue left from manufacturing a cheap plastic bottle or something of that nature?



TIA.



Phil

 

[Gary - K7GLD]

#1. , By the time the oil has cooled, theres also a chance for some settling out of some contaminents - so the sample should be from a fairly recently operating engine. If the engine has been sitting overnight, it could be run for long enough to circulate the oil, but not too long to handle comfortably.



#2. , Sampling outfits will provide sample containers, and that is what should be used to avoid contamination of the sample.