Auto-Rx Customers Questions & Answers

On 2/18/13 I contacted you about a sludge problem  with my 2003 Ford F350
7.3 diesel with 404,200 miles pumping thick sludge from the right side of
the engine when cold. I was quoted $3400 to replace heat exchanger and oil
filter and water pump housings. I researched and found Auto-Rx. Not only was
the sludge problem stopped, the oil pan stopped leaking and the mileage
increased. When truck was newer, it averaged 18-19 mpg. That had dropped to
12.063 mpg. I changed oil at 404,200 with 2 bottles Auto-Rx, second oil
change at 407,188.8 miles, now 14.218 mpg. Third oil change at 411,050,
getting 16.154 mpg. Engine purrs. All mileage calculations are based on 7-8
fill-ups.   -- Ken