2007 Kawasaki Ninja 250R; HPL MC 10w-40 2.8k mi

[thetricky]

Looks like this engine and my right hand tear up oil! Bit surprised, however, now I know what OCI should be so that's good. Have 5gals of HPL 15w-40 HDEO sitting here so may experiment with that later on. Enjoy!

 

[Bonz]

Thanks for posting. Were both samples HPL, the current one and the one from 2023?

I'm interested in that before I say with bells that HPL did not show well. Unless I'm missing something on this sample, fuel dilution was minimal. That oil can't pull itself up by the bootstraps in a 250 twin cylinder. No way I would run that in my modded ZRX 1200 for 5,000 miles (my BITOG standard oci, Kawi's spec) that makes close to 6 times the horsepower and over 6 times the torque of a 250 Ninja. I understand RPM plays a role but 6+ times the torque at half the RPM (5000-6000 rpm, stuff is already happening really fast in any gear at that RPM) is at least as hard on an oil in my estimation. I would appreciate the collective to weigh in on that.

 

[thetricky]

No, the other one on there is Amsoil Metric 10w40. I'm with you, a bit surprised that HPL didn't hold it's own, and nothing changed in riding habits or the bike between Amsoil and the HPL. Now, to give the oil some credit, I ask for everything this motor has everytime I ride it. I weigh 220lbs and I usually ride at 9-13k RPM so I am not easy on the bike. Still, I was hoping for at least 4k OCI.

 

[TomYoung]

Thanks for posting. Were both samples HPL, the current one and the one from 2023?

I'm interested in that before I say with bells that HPL did not show well. Unless I'm missing something on this sample, fuel dilution was minimal. That oil can't pull itself up by the bootstraps in a 250 twin cylinder. No way I would run that in my modded ZRX 1200 for 5,000 miles (my BITOG standard oci, Kawi's spec) that makes close to 6 times the horsepower and over 6 times the torque of a 250 Ninja. I understand RPM plays a role but 6+ times the torque at half the RPM (5000-6000 rpm, stuff is already happening really fast in any gear at that RPM) is at least as hard on an oil in my estimation. I would appreciate the collective to weigh in on that.

I don’t think the power and torque are at issue, but most certainly the RPM is. My wager is that the small engine is much harder on oil.

 

[Bonz]

Fair enough, thanks for the post. I'm speaking from a position seeking information. Twice the RPM at a fraction of the torque or horsepower acting on the same viscosity index improvers wouldn't to my mind shear the viscosity index improvers more. The oil would shear as it does in any shared sump but not to the extent seen there in a quality oil such as HPL is designed to be, IMO. The higher RPM versus higher load, I would think the load and the pressure between the gears would be more of a factor in the bike I'm using as an example. But that's what I'm wanting to understand.

However the ninja 250 has a sump that holds 1.7 quarts, half the oil of the ZRX. For the sake of discussion, its doing twice the work in terms of oil volume but at a fraction of the load relative to my example of a ZRX 1200 that holds 3.3 quarts.

 

[shortyb]

Even with the massive fuel dilution, I think the Amsoil served you better in this engine. If you want to stick with HPL, I'd give them a cal and discuss the details of your UOA.

 

[thetricky]

Even with the massive fuel dilution, I think the Amsoil served you better in this engine. If you want to stick with HPL, I'd give them a cal and discuss the details of your UOA.

This is what I was thinking too, even though it was on a similar death spiral it seems it would hold up better.

Bonz, The only variables I can think of are that smaller sump and keeping it heavily loaded most times. Would be cool to do one long highway run on a fresh fill and test it, I bet it wouldn't be this bad.