0W-40 synthetic oil: what it actually is and who needs it
Porsche has factory-filled its engines with 0W-40 since 1996, and the millionth Porsche engine to roll off the line with that fill happened back in 2012. That’s not a marketing number picked at random; it’s a real answer to a real engine design problem. Direct answer: 0W-40 synthetic oil flows like a 0-weight oil on … Read more