I've been using rx for about 5 years now. It's been awhile since I checked the basic application. There use to be a chart that you would match the number of quarts of oil with the number of oz of rx. Example, 4 quart sump you would use 8 oz rx. It looks like now everything calls for 12 oz of rx. Reason I ask is that I have two cars that have a 3.5 quart capacity. I have been using 7 oz to clean. (much cheaper than 12 oz) But am i getting the benefits?
The only change is the Auto-Rx Maintenance Dose for non sludge engines (3ounces per oil change and sludge engines 4 ounces per oil change) do you know once on the maintenance plan you can extend life of your oil? as well as keeping compression-combustion at top operating levels /
In fact i would find it difficult to believe you would ever need a mechanic to put a wrench on the engine internals. Using the Auto-Rx Maintenance Plan.
