Wilsons Sandbox

> This isn't as interesting as I'd hoped it would be. > > I just got the results back from my first oil analysis. I sent off a > sample of Mobil 1 15W-50 car oil with 3k miles to be tested by OAI, > the company that does the testing to support Spamsoil's super-long > drain intervals. I believe that the filter already had 2k miles on > it to begin with.

> Your regular dyno sauce is all used up at 800 miles, > Unless you use the castrol GTX Then its ok for 900 miles > The viscosity of a petroleum based oil 20-50wt after 3000 miles is like 5-10wt

--- In DSN_klr650@y..., Ted Palmer wrote: > RichardM wrote: > > > This isn't as interesting as I'd hoped it would be. > > > > I just got the results back from my first oil analysis. I sent off a > > sample of Mobil 1 15W-50 car oil with 3k miles to be tested by OAI, > > the company that does the testing to support Spamsoil's super-long > > drain intervals. I believe that the filter already had 2k miles on > > it to begin with. > [...] > > I found it all quite interesting, especially about the viscosity loss. > It looks like Mobil 1 isn't as durable as it is made out to be. > > How much did the oil analysis cost? > > Mister_T > Melbourne Australia

> That's not really a fair test. Tell us where you got it done and

> it with Mobil 1 motorcycle oil after 3000 miles and post it. > > Gerret > A15 "Mj lnir"

>I found it all quite interesting, especially about the viscosity >loss. It looks like Mobil 1 isn't as durable as it is made out to be.

>How much did the oil analysis cost?

----- Original Message ----- From: "RichardM" To: DSN_klr650@yahoogroups.com> Sent: Thursday, September 06, 2001 3:31 AM Subject: [DSN_klr650] Long - KLR650 Mobil 1 15W-50 Oil Analysis Results > This isn't as interesting as I'd hoped it would be. > > I just got the results back from my first oil analysis. I sent off a > sample of Mobil 1 15W-50 car oil with 3k miles to be tested by OAI, > the company that does the testing to support Spamsoil's super-long > drain intervals. I believe that the filter already had 2k miles on > it to begin with. > > This oil saw a lot of abuse. I have a 16T front sprocket and I > slipped the clutch a lot on two different off-road rides with this > oil, the second of which was the hell-ride that CalPosse Russell led > on July 5th. This oil was also subjected to several 5-10 mile long > wide-open-throttle freeway blasts in the desert heat with my stock- > jetted bike. > > Water: there shouldn't be a condensation buiding up in the oil. > > Fuel: contamination unless the choke is stuck on or something. > > Viscosity@40C: (Not tested) > Viscosity@100C: 13.3cSt that out in the summary text. They claim that an acceptable range > for a xxW-50 weight oil is 16.3 to 21.9. Mobil's spec sheets lists > this oil at 18.0. For comparison's sake, their dino 10W-30 is rated > 10.3 and their 10w-40 is 14.1. This number alone makes a strong > argument that 3k miles was too long for this oil. On the other hand, > 13.3 isn't *too* far out of whack when you consider that many people > run 30-weight oil in their bikes to begin with. > > % Solids: Trace number up quite high. > > Soot: NA mandated retarded injection timing soot-load their oil much more > rapidly. The lower emissions pleases the green enviro-whackos but is > quite hard on oil. Are you listening Mr. Beef Stu and your Manly-Man > pickup-truck? Change your oil and find an injection-timing hack. > > % Oxidation: 18.9 acceptable. I'm wondering just what exactly does 100% mean and what > happens when you exceed it? Seems a little arbitrary. Anyway, high > oxidation can be an indicator of overheated oil and it actually > increases viscosity. > > % Nitration: 17.1 nitration can cause sludging and varnish formation. Engines with > poor crankcase vapor scavenging (ie. clogged PCV) tend to drive up > this number. > > TBN: 5.6 for diesels and not so important for gasoline engines. This figure > denotes the oil's ability to neutralize crankcase acids. TBN is > depleted with use. A stand-alone TBN number is not very useful. > Knowing TBN depletion from its original spec is better. I can't find > a TBN figure for Mobil 1 so I might call Mobil tech services sometime > this week. Either way, 5.6 seems a little high for a non CH-4 > (latest 4-stroke diesel spec) oil so I'm not complaining. > > TAN: NA gear oils and such. They generally start off acidic and become even > more acidic with use. > > Spectrographic Analysis > ----------------------- > > Iron: 29ppm > Chromium: 1ppm > Lead: 2ppm > Copper: 24ppm > Tin: 2ppm > Aluminum: 42ppm elevated. They didn't mention the acceptable limit. I guess I'll > call the oil analysis people, too. > > Nickel: 0ppm > Silver: 0ppm > Manganese: 6ppm > Silicon: 11ppm > Boron: 52ppm > Moron: 9000ppm analysis. They said that moron levels are elevated and that I should > change riders immediately. > > Sodium: 4ppm > Magnesium: 958ppm > Calcium: 898ppm :) > Barium: 0ppm > Phosphorus: 805ppm moto-specific oils supposedly have so much more of. The tests I've > seen don't bear this out. 805ppm seems very normal. > > Zinc: 104ppm investigation, even though the summary text didn't mention it. > Normal zinc levels are 700-1200ppm. This is another anti-wear > additive similar to the above. It comes into play when the oil's > lubricating film has been completely broken down and metal-to-metal > contact is imminent. Does it deplete when these conditions are > encountered? Need to ask about this, too. > > Molybdenum: 6ppm in aircraft piston engine oils. Zinc can foul sparkplugs. It also > poisons catastrophic pervertors. > > Titanium: 0ppm > > Vanadium: 0ppm > > Cadmium: 0ppm > > That's all I have. I expected worse. I think this oil might have > been OK if all 3k miles had been on the street. Off-roading seems to > drive up consumption so it makes sense that it elevates the oil temps > and shortens the effective life. > > As for the Emgo oil filter, I see no reason to believe that 5k miles > was too long for this filter. I plan to ask OAI what numbers tend to > elevate when a clogged oil filter bypasses. > > I'll probably use a seat-of-the-pants oil change interval. Longer on > the street and less in the dirt, and I won't be changing out the oil > filter more often than 3k. Assuming I can afford to do the LA B-to-V > run, I might just send that oil off for another analysis, just for > gits and shiggles. > > RM > > PS. I'm not a tribological expert, or even a chemist, nor do I have > any letters after my name. The above commentary is based on > information I've picked up from various sources and sifted through > the bullshit filter a few times. My $.02, YMMV, and the usual > disclaimers apply. > > > Checkout Dual Sport News at > http://www.dualsportnews.com > Be part of the Adventure! > > Visit the KLR650 archives at > http://www.listquest.com/lq/search.html?ln=klr650 > > Post message: DSN_klr650@yahoogroups.com > Subscribe: DSN_klr650-subscribe@yahoogroups.com > Unsubscribe: DSN_klr650-unsubscribe@yahoogroups.com > List owner: DSN_klr650-owner@yahoogroups.com > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > >

>Interesting stuff Richard. Is there any way you can compare say >Castrol 20w50 (which I use but change every 1000/1300 miles) and >a "motorcycle specific" oil?

>Interesting stuff Richard. Is there any way you can compare say >Castrol 20w50 (which I use but change every 1000/1300 miles) and >a "motorcycle specific" oil?