quote:I believe he does, within limits. IIRC the book states that today's 10w30s are closer to yesterday's 5w30s. He then recommends something a bit thicker, perhaps a high mileage oil. Also, he has some series of questions to go through to determine whether you would do well to run a synthetic oil. Also similar re straight weight and multigrade. And there is a section where you can rate a number of factors to ballpark an OCI for a vehicle, although when I did that it seemed to come out much longer than I thought would be workable for me. One of my favorite parts is the cover photo (hopefully they still have it) on the hard copy purchase showing dirty oil running down a hand that is unscrewing the plug from an oil pan.
Originally posted by Michael Wan: I thought Mr. James believes in thicker is better! Michael