There are a whole host of differences between a quick solvent flush and an Auto-Rx Plus cleansing. First and foremost Auto-Rx Plus is a patented chemistry that utilizes lubricants that slowly dissolve oxidized oil deposits as you drive. The end benefit is lubricity is enhanced as the cleaning occurs over the course of an oil change interval. Deposits slowly dissolve and and are collected in the oil filter. There is no inconvenience or wasted steam. Just drive as you normally would and let Auto-Rx Plus do the work.
The is as opposed to a quick solvent flush, which is typically a blend of aliphatic and aromatic solvents that are added to the oil, then allowed to circulate through the motor at idle for 5 to 10 minutes. These aliphatic and aromatic solvent blends can only be run at idle because oil film on working parts becomes so dilute metal to metal contact occurs, which equates to severe wear which lessens the useful life of the motor. Typically these solvent blends tend to degrade or severely swell polymer based rotary seals, which is why they are only recommended to be in the motor for 5 to 10 minutes tops.
Take it a step further, the drained oil with a solvent flush installed is not particularly wanted in the circle of oil recycling. For one the aromatic content is typically toxic to some extent. And all the solvent needs to be boiled off to capture a good grade of recycling. Whereas, the lubricants used in Auto-Rx Plus are non-toxic, are great lubricants, and have a boiling range that is in parallel to that of the oil being recaptured or cleaned as part of the recycling process.
Go back to the home page of Auto-Rx Plus to see just how easy it is to clean your motor of contamination build up as you drive. Under applications you can find the basic application for average use, Fast Track for motors with known sludge. Or type in "solvent" to the home page search engine for more detail.