No 'snake oil' here. I've used Biotech engine protectant in the family fleet for many years. No worries when slightly extending our normal oil change intervals which comes in handy with 2 'kids' with cars away @ college. Its not unusual for them to exceed their OCIs by 1-2k miles before I can get an opportunity to change their oil. Biotech is proven to make any motor oil work better, longer...so it goes in every OCI.
This is amazing product to use with the synthetic oils today. This product is designed to help keep engines lubed. I’m having great success with product