Mobil 1 15w50, Honda Magna VF750, 5k miles

[MRC01]

Mobil 1 15w50
'99 Honda Magna VF750 4 cam V-4 engine
Total miles on oil: 5,000
Total age of oil: 12 months

Just got my second UOA from Blackstone. This is Mobil 1 15w50 "red cap" that I put in my Magna about a year ago. First UOA was last September with 3,000 miles. This one was 2 weeks ago with 2,000 more miles. So this oil has 5,000 total miles a 1 year in the crankcase.
Numbers are second UOA / first UOA / universal averages. The averages are for a 4,000 mile interval.

Al 17 14 32
Cr 1 1 1
Fe 10 9 19
Pb 1 1 8
Tin 0 1 3
Si 10 5 14
Ca 2666 2655 2032
P 1052 1106 897
Zn 1228 1336 1083
vis 79.9 83.3
flash 390 370
TBN 9.0 10.3
fuel
Silicon went up. But I have moved since the last report and now live at the end of a 2 mile dirt road, so with 4 miles of dirt for every ride, elevated Si is to be expected, yet it's still below the universal averages for this engine.

The oil has sheared down to 79.9 SUS @ 210* F, which is in the mid to high 40 weight range. So the Mobil 1 has sheared down a grade, but it's still in spec for this engine which recommends 40 weight oil.

Total insolubles remains 0.1%, which shows that the Honda OEM filter is doing a good job.

Blackstone's advice is to run another 2,000 miles and sample again.

Overall, I'm happy with the Mobil 1. After 1 year and 5,000 miles it's still got useful life remaining.

Comments?

[ May 20, 2004, 09:41 AM: Message edited by: MRC01 ]

 

[Jay]

The oil sheared only 2cSt which is very good. The Delvac 1 that I ran in my Honda VFR sheared about twice that in 1k mi.

All your wear metals look pretty good. How many miles total on the bike?

 

[MRC01]

quote:

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Originally posted by Jay:
The oil sheared only 2cSt which is very good. The Delvac 1 that I ran in my Honda VFR sheared about twice that in 1k mi.

All your wear metals look pretty good. How many miles total on the bike?

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Bike has 19,000 miles. It's got V&H exhaust with dyno tuned carb jetting, K&N air filter, Dyna ignition and makes power to 11,000 RPM (past the stock rev limit). It makes about 6% more HP and 10% more torque than stock, so it may be little harder on oil than a bone stock Magna would be...

The 83.3 SUS was after the first 3,000 miles. Virgin Mobil 1 15w50 is closer to 90 SUS. So the total shear over 5,000 miles and 1 year has been from 90 to 78.9 SUS. The oil has sheared down 1 full grade, but is still in spec for the engine which recommends 40 weight oil.

[ May 20, 2004, 11:27 AM: Message edited by: MRC01 ]

 

[satterfi]

That's a pretty good report.

Even Redline shears in a motorcycle so M1 shearing is no surprise.

I don't remember why I switched from M1 15w50 to Redline. I can't think of a good reason now.

 

[Chris]

Insolubles at .1%!? This number is incredible. It appears that this bike is well tuned with the mods as this is the best UOA on a bike so far. Thanks for the on going results and keep on rolling.

 

[doyall]

What a good showing by M1. Now, if only Blackstone would only provide oxidation and nitration numbers...

 

[quadrun1]

Excellent report!

Does the engine oil in this bike get shared with the gearbox?

 

[MRC01]

quote:

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Originally posted by quadrun1:
Does the engine oil in this bike get shared with the gearbox?

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Yes. The same oil lubes the engine + tranny + wet clutch.

 

[Durrr]

did you tune it yourself? cause it looks like its running great

 

[MRC01]

quote:

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Originally posted by Durrr:
did you tune it yourself? cause it looks like its running great

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I did the carb work myself; the A/F ratio goes from 14:1 in the midrange to 12:1 at the top end. This is a standard setup for good power and efficiency with a safety margin at the top end. Despite the extra power, fuel economy is same as stock. For the Dyna ignition I'm using a pre-programmed timing curve that was developed on a dyno for this configuration.

Dyno output is a fairly flat torque curve. It peaks at 48 ft. lbs. at 7000 RPM, with 90% of the peak torque available as low as 3500 RPM. Power peaks at 83 HP in a plateau from 9000 to 10000 RPM.