I would like to post a few things about why a certain oil will operate cooler than another oil in the same truck pulling the same load on the same road.
First, Base stocks. Most of the Petro based oils on the market today for under $8 or so, are mostly a form a Napthenic base stock and they add a little low refined Paraffinic base stocks. This keeps the cost down, and it also will meet any of today's Specs for oils under OEM requirements and API ratings. Some more that cost a little more, may add some more Paraffin base to them, but still not the greatest of base stocks. Others for a little more add some Synthetic base stock to them and call them a blend, but still, you have the majority of the base stocks are VERY low quality.
Why is it important? because 80% of the stuff in that bottle is BASE stock, that is why. Higher refined based stocks are resistant to thermal breakdown and dissipate heat much faster than lower quality. The higher the base stock is refined, the more heat it can take without breaking down. 100% PURE Paraffin base stocks is what is used in most of Schaeffer's engine oils. These highly refined base stocks are resistant to heat break down up to 500 degrees. That means that 80% of that stuff in the bottle will last up to 500 degrees. WOW! Am I the only one that would see why that is a BENEFIT?
Ok, that leaves 20% for the additives that make it a 5w-40 or a 15w-40 or whatever. It is also what makes it a diesel oil or a gas oil. Some of these additives are friction modifiers like PTFE, Molybdenum etc and some are detergents and others are dispersant's and some are just a waste of space to make the oil company profit more by adding useless stuff to the bottle.
In Schaeffer's oils, one of the Friction modifiers can be purchased over the counter called Penetro 90. It is a highly refined oil based friction modifier that LOVES heat and also LOVES metal. It will attach itself to hot moving parts and lubricate it even when the base stocks viscosity has been sheered.
Another one of the additives in Schaeffer's is Molybdenum. It is known to be the hardest and slick substance on Earth. It has an affinity for metal and when a little heat and pressure is added to Moly, it will plate itself to the metal parts in an engine and remove all friction from metal parts. It creates these slippage planes where when oil has been sheered away, like in HEAVY TOWING OR HIGH HEAT conditions, the Moly is there to keep metal from touch metal. Combine that with the Penetro that also loves heat and is also a Lubricant, there are 2 additives in Schaeffer's oils that protect an engine from friction of parts and disperse heat.
Moly was tested for years by NASA and was found to be the a substance that disperses heat. Anything that has moly plated on it, and then gets hot, the moly transfers the heat away from that part on to other parts it touches. So in an engine, those points are Bearings, rings, valves and the heat they generate is transferred to the oil and to the block where the water cooling system can do its job. NASA used Moly in the heat shields of all their capsules to transfer heat so that our astronauts returned home without burning up. Texaco also did a 5 year long test testing HUNDREDS of additives to lubricants and said that Moly was the best additive that could be used in oils, but yet Texaco does not have Moly in any of their lubricants. It is expensive to put moly in an oil and only a very select few can make Soluble Moly, like Schaeffer's has so it does no plug up oil filters.
I wont get into full synthetics, there are a couple of types of those, and not worth the time.
I Schaeffer's 9000 5w 40, full synthetic, to be tested by super diesel in his setup. First, it is not financially motivated by me, he got $100 worth of oil on my ticket, and I will not gain anything with the results other than this: I am a new Schaeffer Rep in WV. I was so impressed with Schaeffer's and all the people I met prior to deciding to be a rep, that I felt like I needed to do something to help the people in my life save money on their equipment. So if I could send Mike some oil and he found out that it is junk, it is not too late for me to quit working for Schaeffer's. I am proving the oils everyday in my own truck. It had 200,000 miles on it when I "Schaefferized" it and now at almost 10,000 miles, it runs better than it did when I bought it. I am even using the fuel treatment too. LOL.
Once Mike finishes his testing, I will either still work for a great company that has some of the best people I have ever associated with, or I will be unemployed like I was in December before I decided to do this. Let me just say, I am not worried about having to resign. I have seen simply AMAZING results with a few of my fist customers that had some EXTREME equipment to prove it in. One company was spending $20,000 every six months replacing a water pump parts at a mine and now we are into month 5 with no signs of issues, when before, at 2 weeks they started having to work on this pump weekly, then daily and finally burning it up. Since they put it in service with Schaeffer's gear lube, it has not been touched yet since Feb 2, and on July 2nd, when that pump is still operating, that company will save $20,000 PLUS.
Have fun, this is going to be interesting.