Auto-Rx is always in test,since your working with a natural blend of esters you have the opportunity to expand results(if they test out) This is not some knock off, it is patented chemistry. The largest maker of additives in the USA was quick enough to realize the power of the chemistry,s friction modifiers if 2 ounces works for some fine others might need 3 ounces and people with inherent internal friction points might want to use 4 ounces. The buyer has to deceide what he wants Auto-Rx to accomplish, our job is to help him to get the right application for his needs.
Since my cleaning phase was done under the old application guidelines (1500 miles), would you recommend that I stick with the 3 ounce dose or use more for maintenance? By the way, I'm just about finished with my first maintenance dose - 3 ounces ARX, 5 quarts Mobil 1 5w-30, 5000 miles.
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2001 Ford Ranger, 4.0 V6. Mobil 1 0w-30, Motorcraft FL 820s filter, 3oz Auto Rx
