Originally Posted By: CELICA_XX
I have a simple question.
Does the use of synthetic oil actually clean out an engine, like Auto-RX ?
Is "sludge" actually wiped away from the internal engine components ?
Modern motor oil is a fine, chemical balance act which comes with sufficient detergency to suspend any dirt/insolubles from forming, without being too aggressive.
I typically coined the term: "oil is able to keep itself clean".
While some may report the ability for using full syn motor oil to clean a dirty engine (not the word I'm using here, not the term "sludged"), not all results are the same.
If you want something that is capable of performing thorough cleaning w/o being overly aggressive (meaning that it will not thins out the oil nor attacks the elastomeric seals, etc.), use AutoRx.
If you want 10-min gratification in a can, use kerosene flush or stoddard solvent.
If you want to maintain oil's cleanliness, you may either use AutoRx maintenance dose or LC20 (da antioxidant).
Q.