I am using 15w40 motor oil and this winter I want an oil for cold weather. What weight and who makes it? I have always used rotella oil.

 

Rotella has some really nice 5w-40 synthetic. If you like Rotella, I'd use that. It will be more money cause it's synthetic though. I think it's called T-6. Most run 5w-40 for the cold months.

 

Thank you tomorrow I will pick up my oil.

 

If I were you I would look into a company named Mystic. There oil has the most zinc and boron additives in it. Those additives are the most important for anti-friction and longevity in your engine. I run Mystic j8 blend 15-w40 in my truck and love it. I used to run rotella but it has barely any additives in it and the analysis on my mystic came back way better. It can be purchased at Tractor Supply Co. or Orschlens, some Oriellys carry it. If they havent sold it all yet id reccomend you pick up some of that!

 

Can you post some data up to back any of that up please. I'd like to see where Rotella doesn't have any additives in it. I know top engine builders who build race quads and dirt bikes that use Rotella in them because of the cleaning agents.

 

I wouldn't mind seeing those numbers too.

 

With the cold weather we seem to be having I am going to go to 5w/40 oil. I can not spend 10 bucks a quart. I have used Rotella and like the oil. Mobil ! changed the oil and we had hyd pumps failing at work. It was traced back to Mobil oil and we found out the oil was different. The company dropped Mobil ! and had oil made to there speck. I am a little afraid to mfg that change there product.

 

do we need to worry about anti foaming agent in the oil? So the injecters keep working good?

 

Guys, I did some research over the Internet, and the best place I found was bobistheoilguy.com This site is, believe it or not, a forum devoted to oil discussion. On this site I found some guys who did a "VOA" or "virgin oil analysis" on Shell Rotella T 15w-40, and Mystik JT8 15W-40.

Here is the report on the Shell Rotella T 15W-40
Shell Rotella T 15W-40 CJ-4 VOA - Bob Is The Oil Guy

And here is the report I found on Mystik JT8 15W-40
virgin oil sample Mystik JT8 15W40 - Bob Is The Oil Guy

From what I understand, Zinc and Boron are the two most important chemicals to lubrication and longevity, and Phosphurus is the most important to cleaning? Mystik scored higher in all three so I decided to switch over!

Please feel free to correct me if I read something wrong, or don't know my elements! I'd rather look like an idiot and run the right oil!

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I remember seeing a post on there where a gentleman had an analysis done at 7500 miles on the same oil I believe? in a 7.3 powerstroke. The only figure i remember from that is it still had 1063 in zinc after that kind of mileage. I cant seem to locate that post any longer but I will keep looking!

 

google (diesel oil foaming) And see articals about the effects of foaming oil on International engines. If you don't change oil at regular intervals it can make them run bad. It's caused by the air bubbles in the oil in the injector. It effects the discharge pressure therefore the spray pattern.
I had the address , but by the time I got to here I lost it.