Silkolene Pro-S 5W40

[Sean Nugent]

Viscosity @ 40 cst 91.4
Water Content %wt 0
TIM %wt
Iron 2
Chromium
Aluminium
Moly 1
Copper
Lead 2
Tin
Nickel
Silicon 2
Sodium 3
Boron 325
Vanadium
Calcium 2724
Phosphorus 917
Zinc 1212
Mg 28
Barium

Which is all the info I got

Sean
Comments anyone?

 

[Sean Nugent]

Oh - this is apparently fully synthetic. Ester based with PAO added (although I don't have a ratio). I do have a data sheet which I can try and post is required...

 

[Sean Nugent]

Sorry for the multipart post


Kinematic Viscosity @ 100 oC cSt 14.89 18.17
Kinematic Viscosity @ 40 oC cSt 92.35 116.49
Viscosity Index IP226 169 174
Specific gravity @ 20oC IP160 0.858 0.866
Pour point o C IP15 -51 -33
Flash point, Closed Cup o C 195 210
Cold Crank Viscosity at -30 oC cp 6500 6800 (-25 oC)

 

[Patman]

It's interesting how we're seeing a lot of 0w40, 0w30, 5w40 oils nowadays which have very thick viscosities at 40c.

A typical 5w oil is closer to 50-60cst at 40c. With this oil being so much thicker, it could create a bit more wear. It would be interesting to see UOAs with it.

 

[Sean Nugent]

Well its just gone into the engine for the first time. I guess we will see what happens.....

Sean

 

[Jay]

Is this motorcycle oil? The boron is very high.

 

[Sean Nugent]

Sorry - Inever came back to you on this one.
No it isn't

Sean

 

[Primus]

quote:

---

Originally posted by Patman:
It's interesting how we're seeing a lot of 0w40, 0w30, 5w40 oils nowadays which have very thick viscosities at 40c.

A typical 5w oil is closer to 50-60cst at 40c. With this oil being so much thicker, it could create a bit more wear. It would be interesting to see UOAs with it.

---

Any evidences that viscosity at 40C may cause higher wear ? As for viscosity of 0W-40 and 5W-40 oils, I don't see some changes indicating for a trend. From my point of view, they have become thinner.

Regarding for additional info posted by Sean, apparently he indicated data for Silkolene 5W-40 and 10W-50.