These results were achieved, Grassi explains, because Ultraguard Gold filters use 100 per cent synthetic filters with a wire backing that not only traps particles up to four times smaller than conventional oil filters but "can also reduce wear in the engine by as much as 74 per cent."
Reducing wear on the engine is what oil filters are all about, of course, so this is something worth thinking about. For more detail on the test results, go to www.acdelco.com and check them out yourself.