No 505CRF Fuel System Treatment thread?

[Ray S]

It's all trade secret ingredients!
https://www.atschemicals.com/wp-content/uploads/2025/04/505-CRF-Fuel-System-Treatment.pdf
Only $50 a bottle!
This guy actually did decent job with B/A borescope video.
TLDR; it didn't remove carbon from the crown.

Unlike borescope pics I had after 6 or 8 MMO and Seafoam treatments...

 

[The Critic]

The guy who runs ATS is very good with training, but that doesn't mean he knows anything about chemicals.