Which non-HPL and non-VRP oils are known for cleaning?

[Hohn]

My take from that is it was probably much worse before he started experimenting. How did the cylinder bores look? My guess (I don't have time to look up the video now) is there was already so much ring and liner wear that no amount of cleaning was going to stop the oil transport past the rings.

I've watched every video on that series, I'll save you the trouble. The engine has major issues that unsticking an oil ring or two cannot and does not resolve. One of his videos showed borescope shots with stream of oil pouring down the cylinder walls with the piston at BDC. That to me isn't a ring issue-- he has a headgasket or something letting oil pour into the bores.

 

[kschachn]

I've watched every video on that series, I'll save you the trouble. The engine has major issues that unsticking an oil ring or two cannot and does not resolve. One of his videos showed borescope shots with stream of oil pouring down the cylinder walls with the piston at BDC. That to me isn't a ring issue-- he has a headgasket or something letting oil pour into the bores.

Then I am a bit unsure why we are we even discussing it in the context of cleaning. The engine is toast.

 

[Hohn]

Then I am a bit unsure why we are we even discussing it in the context of cleaning. The engine is toast.

Someone mentioned it. It's not particularly germane here.

 

[JAG]

My take from that is it was probably much worse before he started experimenting. How did the cylinder bores look? My guess (I don't have time to look up the video now) is there was already so much ring and liner wear that no amount of cleaning was going to stop the oil transport past the rings.

At least one of his videos showed cross-hatching looking good. There is at least one long, deep vertical scratch.

It is discouraging to see how varnished that engine still is after trying so many things to clean it up. It jives with my experience of trying to clean the varnish off my former 2003 VW GTI. None of the oils I tried made a significant difference. Some of the oils included M1 0W-40, M1 5W-30 ESP, M1 5W-40 Turbo Diesel Truck, “gold” German Castrol 0W-30, Castrol Syntec 5W-50, Valvoline 5W-40, Liqui Moly 0W-40 and 5W-40, Amsoil ACD diesel motor oil, Amsoil 5W-40, Redline 5W-20. This was the 2003 to maybe 2012 era. I wish VRP existed back then since that engine was a great test case. OCIs were always 3700 to 5000 miles with mostly >30 minute trip lengths.