I've been doing some price shopping and thinking about making a change for engine oils and lubricants. I'm currently using chevron for everything, but its starting to get to darn expensive. I'm paying anywhere from 14-16.00 a gallon for 15w40, by the case, or roughly 12.00 a gallon for a 55 gallon barrel...all from my local rep. The application is a road tractor, 99.9% highway miles, running 80K lbs or less. First question is in regards to Kendall dxa semi synthetic 15w40..... a different rep in the area for another company can sell me the Kendall DXA for 12.00 a gallon if I buy a 55 gallon drum. Now, I know that is the same price as the Chevron, but he is claiming that I'm getting a better oil for the same money as a non synthetic blend in chevron brand. He's making claims that Kendall is leading the oil industry right now in testing and longevity. I think that I would be fine either way, but am I really getting a better oil for the same money?? Is the liquid titanium really making a difference? I found an old thread where it stated that the titanium was a cheaper additive then moly so that is why its becoming so popular, any insight on this??? Second is in regards to Schaeffer's. A buddy of mine buys it from a local place, he states that he is getting it for 14.00 a gallon in their buckets. I of course questioned that, cause it does sound strange. I can't find that stuff anywhere online for less then 25.00 a gallon. Anyways, to the question, my local rep for this new oil company says that Schaeffer is a great oil, but a snake oil. He is stating that the moly in the oil is to large of particles to go through an oil filter, so he is claiming that shortly after you change your oil, the filter is catching the moly and it is not really doing anything. Can anyone elaborate on this?? This rep I'm talking with says that if you read the SDS for the grease and oil and compare it to other brands, that you can get the same thing for half the cost, he's stating that there is really nothing special about the brand. Oh, I should add, my new local rep is also a dealer for citgo, gulf, phillips, and many more. I don't know if anyone has thoughts on these oils, but I'll listen and learn. I'm not knocking the brand, I see the results of my buddies engine and don't like what I see, but I'd like some clarification on what this rep is telling me. good, bad or indifferent. I personally feel my buddy is being taken for a ride by his oil supplier, but he seems to like it that way lol.