Well i've run my BMW 728i through a auto-rx clean and rinse cycle and have to say im quite impressed.
The car has 120,000 miles and is used as a chauffeur/taxi car so averages about 2,000 - 2,500 miles a week.
One major difference I did notice after the treatment was the amount of oil it took to refill.
I have used both synthetics before auto-rx and mineral oils during and ALWAYS got 5.3-5.4 litres in the engine. I change the oil every 2-3 weeks so I know the procedure inside out. So it was extremely suprising when on refilling it took 6 litres to refill!
Are these oil passageways that have become open again after treatment or is there some other explanation?
Anyway it runs great, so thanks. A little tech explanation on the results would be great if anyone wants to chuck in some theories.
