04-15-2015, 10:46 PM
Having read many technical articles on synthetic oils, I've never read of an oil leak problem from using them. In 50 years of doing my own maintenance on my cars and motorcycles, I had many more oil leak problems before synthetic oils were available. Every oil leak I have repaired has been caused by defective gaskets or seals, usually from normal wear and aging or the seal or gasket being improperly installed. I switched to synthetic oils exclusively about 15 years ago and have never had any problems.
