I own a 2014 Chevy Silverado with the direct injected 5.3. I've ran a whole oil change interval strictly on E-85 and another on just regular gas using the exact same type of oil for each. Sent the samples to Blackstone...identical results as far as lab analysis goes...as far as my personal analysis goes, the oil sample after running e-85 for 6000 miles, the oil came out almost as gold as when it went in the engine. Using gas, the oil came out black. But as far as wear particles in the oil, again, samples were identical.