Nublust Posted December 2, 2014 Share Posted December 2, 2014 Time for my first oil change. Turns out it's not as simple as I'd thought it would be .I've seen a lot of arguments between the use of semi/fully synthetic engine oil.Fully: http://www.ebay.co.uk/itm/Motul-7100-Motorcycle-Oil-10w40-2-Litres-Fully-Synthetic-/251728359982?pt=LH_DefaultDomain_3&hash=item3a9c2df22ePart: http://www.ebay.co.uk/itm/Castrol-Power-1-4T-10W40-Part-Synthetic-Motorcycle-Engine-Oil-2x1L-2L-/151264293932?pt=LH_DefaultDomain_3&hash=item23380df42cFor the sake of £4.61 I'd rather get the better stuff...unless it's all just a marketing ploy?Thoughts? Quote Link to comment Share on other sites More sharing options...
Stu Posted December 2, 2014 Share Posted December 2, 2014 What does your service manual tell you to use? Quote Link to comment Share on other sites More sharing options...
Fozzie Posted December 2, 2014 Share Posted December 2, 2014 Always follow what the manual says Fully synth - It is more slippy and thinner than regular oil, this does mean it gets around better but it is more expensive and basically does the same job. It is however designed and made for purpose.Part synth - It already has some fully synthetic stuff in there, it is actually a type of mineral oil with fully synthetic additives thrown in to the mix. It does its job by a matter of nature, with some engineering thrown in.What this means for you?Most engines that are worn in, will see no difference using part synth, if you keep the changes regular and to the book at the least. If you have a high performance engine, with fine tolerances, then the thinner, and more slippery oil is the best way to go.I used part synth in a GSXR with no ill effects over 20k miles. Same for my Hondas and so on... I didn't do enough high RPM riding back then, I used the bike for commuting and a bit of fun. Hope this helps, I work in the oil industry so it's quite prudent I know myth from fact Quote Link to comment Share on other sites More sharing options...
Nublust Posted December 2, 2014 Author Share Posted December 2, 2014 The manual just says 10w40, neither that nor the haynes manual I have specify fully/semi. Not sure if that means I'm fine to use either? Quote Link to comment Share on other sites More sharing options...
Fozzie Posted December 2, 2014 Share Posted December 2, 2014 The manual just says 10w40, neither that nor the haynes manual I have specify fully/semi. Not sure if that means I'm fine to use either? Just seen you have a Kawasaki ER6F in your bike description.I had one, I used 10W40 Motul 5100. It's a quality oil, and seems to do the trick. Ran an ER6F myself on that stuff, never missed a beat on it. I'd say it was a good oil for the bike although the ER does get hot easily. Quote Link to comment Share on other sites More sharing options...
Stu Posted December 2, 2014 Share Posted December 2, 2014 Yes either will do Some specify fully synthetic Quote Link to comment Share on other sites More sharing options...
Chrissb6 Posted December 2, 2014 Share Posted December 2, 2014 A very good friend of mine who builds Kawasaki race engines for a living told me that fully synthetic oils are not suitable for motors with a wet clutch Quote Link to comment Share on other sites More sharing options...
Glorian Posted December 2, 2014 Share Posted December 2, 2014 Cant remember which one mine takes.. but i bought one put it in and realised it said i needed the other stuff.. Sooo... just gonna wait till it gets low drain it out and fill it with the right stuff it has ran fine for over a month with it in now. Quote Link to comment Share on other sites More sharing options...
fq-craigus Posted December 2, 2014 Share Posted December 2, 2014 Have a perk online you should find details on oilneeded. Using incorrect oil may have underlying problems that you may not notice. Some will say they have used both with no probs and they either havnt noticed the probs because they are deep in th engine and take some time to develop or dont push the bike hard enough to notice things like clutch slip. Using wrong oil can cause wet clutches to slip, on some bikes more than others. I would take a pretty good guess you need semi synth oil Quote Link to comment Share on other sites More sharing options...
Glorian Posted December 2, 2014 Share Posted December 2, 2014 Well its getting quite low anyhow.. Will empty it out and fill it up with the right stuff this weekend =) Quote Link to comment Share on other sites More sharing options...
Nublust Posted December 2, 2014 Author Share Posted December 2, 2014 I decided to try out the fully synth and see how it goes. Worst case I'll just change it again I guess. Thanks for the help guys . Quote Link to comment Share on other sites More sharing options...
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