Keith, primarily I've had experience with the Cummins engines. Cummins says that the percentage is so small that it doesn't have any adverse effects on the fuel system, In the larger trucks if the automatic system is installed they say that the oil change interval can be extended to 525,000 miles or 844,906km with just the filter having to be changed at 75,000 miles or 120,701km but these systems have only been installed on large trucks. I think it would be a good test to see if this system could be installed on a smaller truck, just think extended oil changes and better yet no waste/hazardous material charges.