CleanSump
Site Donor 2022
It's a good time to try the HPL Engine Cleaner and run it exactly as the instructions say to do it.
Also, some of the higher Ester oils are known to help with stuck rings. Like Redline, Motul 300V, Amsoil Signature Series. The old standby Rotella has a rep for cleaning sludge.
It makes sense that if the HPL dissolves and disperses the carbon in the ring grooves, it should clean it up. The problem is oil going past the oil control rings. This means the cleaning oil is going to be drawn up where you need it. It probably works best when used over multiple drives where it has a chance to sit on the rings for a while when the engine is not running so it dissolves the carbon, then that stuff is cleaned off and the oil is circulated again during the next engine run. So normal daily driving vice going for a long, multi-hour trip.
5 minute flushes are going to give you 5 minute results. And transmission fluid has no detergents to break down engine carbon, it's just thin the oil as far as an engine. It got it's reputation as a cleaner when it contained Sperm Oil, which is an Ester. There hasn't been Sperm Oil in it for 50 years or more.
Also, some of the higher Ester oils are known to help with stuck rings. Like Redline, Motul 300V, Amsoil Signature Series. The old standby Rotella has a rep for cleaning sludge.
It makes sense that if the HPL dissolves and disperses the carbon in the ring grooves, it should clean it up. The problem is oil going past the oil control rings. This means the cleaning oil is going to be drawn up where you need it. It probably works best when used over multiple drives where it has a chance to sit on the rings for a while when the engine is not running so it dissolves the carbon, then that stuff is cleaned off and the oil is circulated again during the next engine run. So normal daily driving vice going for a long, multi-hour trip.
5 minute flushes are going to give you 5 minute results. And transmission fluid has no detergents to break down engine carbon, it's just thin the oil as far as an engine. It got it's reputation as a cleaner when it contained Sperm Oil, which is an Ester. There hasn't been Sperm Oil in it for 50 years or more.