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

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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 <0.5% 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

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Idaho Falls, ID
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

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quote:
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?
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 ]
 
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903
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CA
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.
 
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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. [Burnout]
 

MRC01

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quote:
Originally posted by quadrun1: Does the engine oil in this bike get shared with the gearbox?
Yes. The same oil lubes the engine + tranny + wet clutch.
 

MRC01

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quote:
Originally posted by Durrr: did you tune it yourself? cause it looks like its running great [Big Grin]
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.
 
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