New Super Tech 15w-40 CK-4/SN Full Synthetic HDEO VOA w/PC

[scottatxdeezelv8]

Yeah thats a little scary

 

[scottatxdeezelv8]

Yeah, let us know how it goes. I was surprised that the viscosity went from 15.1 to 13 in just 4.9 hours in the tractor mower but I set the engine at 3450-3550 RPM's.

Will do brother

 

[whizbyu]

Yeah, let us know how it goes. I was surprised that the viscosity went from 15.1 to 13 in just 4.9 hours in the tractor mower but I set the engine at 3450-3550 RPM's.

Is that an unusually high RPM for a lawn tractor? I've been reading mixed opinions about this oil. One says that the additive package is very good. Another opinion states that the particle size is large and can cause increased wear. I bought about 10 gallon of this synthetic oil for my one diesel and 2 gasoline engines.

 

[scottatxdeezelv8]

Only way we will know is with a solid 5k UOA on something that isnt a lawnmower. I will be doing one eventually but its taking time.

 

[fantastic]

Is that an unusually high RPM for a lawn tractor? I've been reading mixed opinions about this oil. One says that the additive package is very good. Another opinion states that the particle size is large and can cause increased wear. I bought about 10 gallon of this synthetic oil for my one diesel and 2 gasoline engines.

I have an old 1991 Kawasaki on the mower and JD/Kawasaki recommend slightly lower RPM. However 3600 rpms is where Kawasaki rates the horsepower for my engine. I wanted to get out what it's rated for and only being a single cylinder 17 HP on a 46 inch mowing deck was necessary in my opinion. The additive pack on here is quite good and no reason to doubt it's capability. There are several oils that suffer initial shearing but sort of level out over the longer run. I might try running this for 10 hours or possibly the whole season and then sample again to see how it did.

 

[scottatxdeezelv8]

You can always add Schaeffers moly additive as its super thick and has Antimony. Keeps shearing to a min. I thought of running it that way on my next oil change.

 

[kschachn]

You can always add Schaeffers moly additive as its super thick and has Antimony. Keeps shearing to a min. I thought of running it that way on my next oil change.

How does that reduce shearing of the VM?

 

[scottatxdeezelv8]

Its thick actually really thick. And has antimony. Thicker oil leads to less shearing under extreme pressures and heat.

 

[kschachn]

Its thick actually really thick. And has antimony. Thicker oil leads to less shearing under extreme pressures and heat.

I can't see how a particular element or additive would affect the shear stability of the VM. Can you explain how antimony helps here?

And no, a thicker oil always experiences more shear forces during operation. That's why it heats up more. The only things that help reduce mechanical shear breakage of the VM are using a high quality VII or reducing the quantity of the modifier.

 

[scottatxdeezelv8]

I can't see how a particular element or additive would affect the shear stability of the VM. Can you explain how antimony helps here?

And no, a thicker oil always experiences more shear forces during operation. That's why it heats up more. The only things that help reduce mechanical shear breakage of the VM are using a high quality VII or reducing the quantity of the modifier.

 

[scottatxdeezelv8]

If the oil is shearing under a 40w as mentioned prior. Running the additive thats thicker will promote the oil from going under its the desired viscosity.

 

[scottatxdeezelv8]

The antimony is just an anti friction anti wear and the moly is in the additive as well but on the low side.

 

[kschachn]

If the oil is shearing under a 40w as mentioned prior. Running the additive thats thicker will promote the oil from going under its the desired viscosity.

Sure. Adding a 70-grade additive (much like Lucas) may help it to result in a higher grade at the end. But that’s a far different mechanism than it “has antimony” or that it “Keeps shearing to a min”. It will shear just the same but because you’ve added a thick additive the viscosity may not lower as far as before.

You could achieve this same result by just using a higher grade to start with and skip the additive.

 

[scottatxdeezelv8]

I dont disagree. But this oil is a budget oil. I usually just run 15w50 in my Benz and 5w40 both napa oils (Valvoline) and utilize 2.9 quarts of 20w50 VR1 Full synthetic Valvoline with the benz. It runs with a lot better oil preasure and 0w40 always shears more to a 30w quickly.

 

[chexxers]

deisel oils are for DIESELS says the oil geek, surely smarter than most of us!!!

 

[kschachn]

deisel oils are for DIESELS says the oil geek, surely smarter than most of us!!!

Thanks benjy.

How come you stopped using your previous name?

 

[scottatxdeezelv8]

deisel oils are for DIESELS says the oil geek, surely smarter than most of us!!!

Actually this is SN rated. Meaning you can use it in gasoline engines.