I'm having my 12K service today and wanted the general consensus on whether I should switch to synthetic or not.
i don't mean to put you on the spot with my question. it just seems there is nothing but anecdotal information regarding synth oil and its benefits. i wish some industry group would do research.rixchard said:I don't know what data is available (mostly because i don't care about the oil in my bike), but just because I don't know does not mean there it is ok to assume that anecdotal evidence will sufice. That type of eveidence will provide nothing more than a feel good kinda thing( because 27 people uses Mitey Oil XRG200 and love it, I think I am also going to use it. ) It's sloppy thinking.
Now granted, it is possible that these 27 people have already done the research and their opinion on this matter can be trusted, but how do you determine this?
I think my assertion stands.
Couldn't agree more with you Mike. Its also nice to see someone else doing oil analysis. It's really the only way to know whats going on in your motor and how well the oil you've chosen is holding up . So how about you guys who are on the fence prove it to yourself and spend a few bucks on oil analysis instead of waiting various "flawed" studies.685ursus said:Many different answers to an oil question as always. I have an 05 K12LT. At 1200km or 744 miles I put 20W50 mineral oil in, 5000 km or 3100 miles I put a semi synthetic oil in the crankcase. At 11000km or 6800 miles I installed a true synthetic PAO oil. I rode west from Ontario to Montana down to Yellowstone, experienced very hot weather and some fast riding which equals fast engine speeds. Changed oil after I arrived home, 10200km or 6300 miles on the oil. Oil level had dropped less than half of sight glass or 4 to 5 ounces.
Sent oil for analyses, TBN or Total Base Number of used oil was 6.8, about 60% of life of oil still remaining. New oil of this brand has a TBN rating of 11.
Most mineral oils are 7 or 8 and get used up much quicker. Reasons I choose a premium synthetic are: withstand high temperatures longer, oil molecules are uniform size = consistant layer of engine protection. Synthetics do not break down as fast as mineral oil and are free of impurities such as sulphur minimizing sludge build up. To me a little more cost is good value versus the advantages in the long run. There are valid tests that have appeared in a few motorcycle magazines, test done in accordance with SAE specs. Some may not agree, to me, oil is not oil. The choice is yours for sure. If you did not value your bike you would not have asked the question. The 2005 K12LT comes with synthetic in the rear axle and trans. from the factory when new. BMW cars come factory filled with synthetic in their engines when new.
you can analyze the oil all you want but you still have not proven cause/effect with respect to engine wear. that experiment, to my knowledge, has yet to be done. unless i missed it. maybe someone already did it but then declined to publish the results for whatever reason.nplenzick said:Couldn't agree more with you Mike. Its also nice to see someone else doing oil analysis. It's really the only way to know whats going on in your motor and how well the oil you've chosen is holding up . So how about you guys who are on the fence prove it to yourself and spend a few bucks on oil analysis instead of waiting various "flawed" studies.
the study was by Motorcycle Consumer News (MCN) ... and they measured things like sheer resistance, viscosity ... a bunch of engineering things. but they measured all that stuff in the laboratory. they did not bother to actually measure wear in a running engine. let's face it ... to do it right is a LOT more difficult, time-consuming, and expensive.rixchard said:One final thing who said anything about flawed studies. Which flawed studies are you refering to? How are they flawed? Show me the beef!
No, 6.8 or an 11 in values that where quoted in the previous post will not say if your engine is going to blow up but the values in aluminum, chromium, iron, copper, tin, nickel, potassium, and silicon ( to name just a few) can indeed tell you if your engine is going to blow up or wear out prematurely.rixchard said:Why should I get off the fence? It makes no difference to me which oil is in the bike. and so far you have not produced a compelling enough reason for me to care. So my oil shows a 6.8 instead of an 11. Do those numbers say my engine is going to blow up
or do they say I might get a .00xyz% boost in performance and increase engine life by .0xyz%. If it is the former then you have my attention , if it is the latter.. well who gives a f***k? Not me that's for sure.
One final thing who said anything about flawed studies. Which flawed studies are you refering to? How are they flawed? Show me the beef!
LOLmeese said:Ah yes, the first oil thread of the new year. Combined with a poll, no less. This oughta be fun.