YOUR favorite OIL????

If you check over at the Bob Is The Oil Guy website, you will find a lot of information. Don't let the name fool ya, it is probably one of the most reputable websites there is regarding oils, lubes, etc. There are some folks over there who are real petroleum engineers. who study this stuff. Among them, they pretty much agree that unless you have a very special application, or are operating in some very extreme temperatures, or are experiencing bad oil samples data from regular oil, there is no real benefit to using a synthetic. From my experience and from several years of oil sampling both regular and synthetic oils I have used in both Cummins and Detroit engines, I would agree. Unless you are trying to overcome a real problem, going to a synthetic might just be throwing money away. It sure won't hurt, but if you don't need it, then why use it?

But you could get the T6 or Schaeffer 9000 and run it for a couple of oil changes. Do your oil sampling on the oil and then determine if it is giving you something you were not getting with regular oil. Then you will know for sure. Make decisions based on data and not feelings. If someone isn't doing regular oil sampling on conventional oil, they have no idea if there is a problem that they need synthetic for. Don't just listen to marketing hype. The oil companies will be glad to sell you something you don't need, just like any other company would.

Trying to go to long extended drain intervals would be another reason to try out a synthetic. They tend to resist shearing and breakdown better over a long period of time.

 

When and how do you get the rebate?

 

Chevron Delo semi synthetic for 1.3mil. original miles and truck still going strong with the new owner. Will use Delo full synthetic in my next truck for sure.

 

I was always fond of Delo, both the conventional and the synthetic. But it just didn't do as well as I thought it should in my present engine, so now it is on Schaeffer oil with much better results. I am running a blend from them that does really well. In talking with them, the additive package is the same on the blend as it is for their full synthetic. Might give their full synthetic a try in the future.

One thing to keep in mind, is that different engines will "prefer" different oils. Not that any brand is bad or another is light years ahead of the others. This is the very same thing you get with small caliber rifles. You can take two different rifles and feed them the same high quality ammo. But lots of times, one might shoot a tighter group than the other rifle. And when you change to another quality ammo, the rifles reverse in which prints the tighter groups. It is not a matter of either rifle being bad, or either ammo being bad, it is that a particular rifle just plain shoots best with a particular brand of ammo. Engines are the very same way. One person can get great results with Brand X, while the results for another person using Brand Y gets better results in their engine. Both engines are great engines and both oils are great oils. Just that they are not interchangeable when it comes to the results. In my experience, I have never gotten my best results using any of the major name brand oils we are all familiar with. I have gotten my best results from Mystik 15w40 JT-8 synthetic blend and Schaeffer 15w40 7000 synthetic blend, and the later one slightly better results than the former. Nice thing is, that both of these oils are cheaper for me than the big name stuff, even at Wally World pricing! Probably because these oils are not shelling out millions in glossy magazine advertising or sponsoring trucking shows and such.

 

+1 on different engines prefer different oils. I've tried both Shell and Mobil for a few oil changes and both showed constant higher oil temps then Delo and faster soot accumulation. Just gotta try different ones and see which one works best imo.

 

Has anyone tried Tractor Supply store brand Traveller15w40? Dug around bobistheoilguy and didn't turn up a lot. It's $49.99 a 5 gallon bucket right now.

 

I haven't tried that one, but when I used the Mystik JT-8 15w40, I got it from my local farm and home supply store at a very good price. The Farm Supply stores are the best sources for good oils at lower prices.

 

I used rotella, now trying delvac 15w-40. If highway runs, wanna try synth oils for summer and 15w40 for winter.

 

I would think you would want to reverse that idea... use synthetic in the winter and the 15w40 in the summer. A 5w40 full synthetic has a typical pour point of -40F. A typical 15w40 has a pour point of -28F. Which do you think would be better in cold weather? Especially on cold start up?

That is why I like the 15w40 synthetic blend I get from Schaeffer. It has cold pour point of -38F. Good year round oil. Their full synthetic has a -45F pour point. Not enough motivation for me to feel I need to make the switch to it. If I was operating in Alaska all winter, then yeah.

But then, you could also just stick with the synthetic year round, and that would be a good idea also. All of these are 40 weight oils. The only difference is the winter flow rating. That is all the number before the "w" means. It has nothing to do with the viscosity at operating temperature. You could even use a 0w40 and it would still be a 40 weight oil.

 

My home state got to -9F this winter.