I was wanting to see if I could try to find some of this. Then I noticed on the Rotella site, it says it is only available at O'Reilly's or NAPA. So, off to O's I go. They don't have it, of course. Then I noticed the regular T6 is $28 a gallon. I started looking at the other oil. Mobil Super Synthetic at $30 for 5L. M1 on sale for $28 for 5L. No wonder the bottles all have dust on them.