Last summer I became very concerned with the amount of oil I was pouring into my bike.  By the end of summer, I'm pouring in a qt. a week.  No need to change oil at these rates.  I tried Mobil1 vtwin 20w50 with no change.  Then winter appeared and the oil usage stopped.  I'd have to equate this boil off with the flash point of the oil.

So this year I'm logging my oil use and temps with some highly touted oils.

My daily commute consists of a 25 mile run on the superslab.
Just enough time on the street to warm it up before I hit full speed.
Typically 50 to 75% at 65-70 mph. The rest at 30 to 45 mph.
I keep the oil filled up to the bottom line in the oil window as I get up to the top line it tends to blow out the breather.

Data from the 1st run of Rotella Synthetic T6
Started with a fresh oil change and a new filter.

klotz MX-4 15w50 with a new filter.

The yellow bar shows the average for the data collected.
The data from the previous RotSyn run is repeated below
And the next line is RotSyn subtracted from Klotz.
Interesting thing to note is that the head temp is 9° hotter.
This could be vary condemning, if the Klotz isn't taking the heat out of the head, it can't be good for it.

Next week promises to be cooler, so we'll see the impact of cooler ambient on Klotz.

Actually, I am not surprised that a 15W-50 oil would run a little hotter than a 5W-40 oil. The heavier oil would cause a little more viscous drag than the thinner oil, thus more frictional loss. That's the reason car makers are calling for thinner oils, such as 5W-20 for year-round use (Honda and Ford). Those thinner oils very slighty increase fuel mileage by lowering engine friction.

Keep those measurements coming.

According to klotz... Flash Point: 480°F (same for all mx4's)

But according to an independant test... Flash Point: 385°F (mx4 10w40)

and after 12 hours in a raptor 700... Flash Point: 305°F (mx4 10w40, more than likely due to 3.5% fuel contamination)

And from Shell's Rotella MSDS... Flash Point: 435°F (RotSynT6)

Edited:

justin_o_guy2 wrote on 08/29/10 at 17:19:55:


Quote:

Serowbot wrote on 08/29/10 at 19:54:55:

it has a variation in my cooling, so the more humid it gets, the faster I go.
Which increases air flow to the bike.

Yea, but ya GOTTA use more Klotz, cuz thats the price ya pay for ZERO WEAR oil..
Pfffft
Everbody done been knowin That fer Yeeerz, mang!

2k mile oil change OF
2qts to change, 2 qts to make up leakage and evaporative cooling.
same for both.

To clarify:
Test period, 2 months and 2k miles.
at start of test, 2qts bring level up to midway with filter change.
record make up oil.

RotSyn, 2 qts. change + 2 qts over 2 months and 2k miles (test complete)

Klotz, 2 qts. change + 1 qt over 1 month and 1k miles (test incomplete)