Oil Samples

What is the longest you can let a collected oil sample sit before sending it in for testing, without ruining the results?

I took an oil sample, put it behind the seat with 1/2 quart of new oil, and forgot to send it in, almost 3 months ago...... Since it sat in the truck during all the temperature changes, I was wondering if that would affect it.

I emailed blackstone, and I am waiting for their response, but I wondered what others thought.

EDIT TO ADD : found this on the blackstone FAQ

I took a sample three months ago and forgot to send it in. It's been on a shelf in my garage ever since. Can I still send it in? Will the results still be good?

Should be fine.​

 

I'm almost positive it doesn't matter. The oil in the sump is abused as far as oil goes. Shearing, heating, cooling, pressure, and dirt....so if your oil was sealed in a good container- I wouldn't worry about it.
You can make a note on the card for the sample and if they notice anything out of the ordinary- They may be able to correlate it to the time in the sample jar.