It's trash. I used $80 of this non-miracle in a 2001 7.3l powerstroke. Zero mpg increase, zero change in temperatures, zero change in injector noise, zero change in HPOP logs. Zero, Zero, Zero. Literally did nothing.
Most of the feedback is so ignorant or fake I can't believe people believe or repeat it. It's like people posted a review plagiarising the claim right off the bottle. Lol. Any product hyped this darn much from a small company with such a narrow product focus is probably manure.
Powerstroke only garage, couple of 30 year Ford techs down the road , even has a board behind the counter saying "no, we don't sell or recommend Archoil. Just get proper diagnostics and use proper oil with anti foaming additives"
Sorry about rant post but if ever there was a myth needing busting it's Archoil 9100.