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Post by mattybeckett on Sept 24, 2016 21:20:27 GMT 1
Ready to drop my engine oil and was wondering what might be the best type to use ? iv'e heard some reports about fully synthetic making gear changes seem clunky ?! Not bothered about price but would like to put the best grade etc she deserves..
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Post by bare on Sept 24, 2016 21:31:13 GMT 1
Automotive GL4 75/85 w (or similar weights) Gear oil.
It works V well.. possiby even the best possible choice.
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Post by wallcraft on Sept 24, 2016 21:43:40 GMT 1
Automotive GL4 75/85 w (or similar weights) Gear oil. It works V well.. possiby even the best possible choice. +1 available at Wilko's surprisingly! |
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Post by arrow on Sept 24, 2016 22:21:54 GMT 1
Automotive GL4 75/85 w (or similar weights) Gear oil. It works V well.. possiby even the best possible choice. After trying many different oils, I totally agree with bare. |
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reggit
Drag-strip hero
Posts: 230 
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Post by reggit on Sept 25, 2016 9:30:44 GMT 1
Might have to try that, I've always used 15(ish)W40 mineral car engine oil in the past.
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Post by mattybeckett on Sept 26, 2016 15:20:55 GMT 1
Surely that would be to thick !! also it,s EP Oil, wouldn't that make the clutch slip. Not saying your wrong or anything but i did see in the manual to use normal engine oil grade like 10/30 40 but oils have improved over the years and thought there may be an better alternative.
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Post by copper99 on Sept 26, 2016 15:45:00 GMT 1
A standard bike isnt that fussy, change it once a year and it'll be quite happy with any suggestions above and the multitude of different ones made in the past..
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Post by bare on Sept 26, 2016 18:21:51 GMT 1
Moto 101 :-)
Gear oils use an Entirely different weight classification system, so 75/85w is close to 10/30 .. 10/40w Motor oil. No viscosity issues.
Also GL4 means Clutch pack compatible.
Engine oils typically have energy/friction modifiers which means Clutch Slip. Not a clever choice.
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Post by mattybeckett on Sept 26, 2016 20:17:24 GMT 1
Thanks for that Bare. Moto 101 it is then :-)
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Post by mickt1964 on Sept 26, 2016 20:55:08 GMT 1
Yamahas own manual I think specs 10/40 according to my local bike shop when I went into to buy some gear oil a couple of weeks ago
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Post by looey on Sept 26, 2016 21:41:51 GMT 1
Yamaha Owner's Manual actually states 10w/30 SE.
I do a lot of miles each year on various 2-strokes and have used the GL4, Carlube 10W/30 Mineral, Tesco 10W/40 Mineral, Wilko 15w/40 mineral, Silkolene Light Gear Oil and Motul Transoil and never experienced much of a difference when using any of them.
Certainly none of them caused any clutch slip or made much (if any) difference to gear selection or selecting neutral etc.
You pays ya money........
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Post by bare on Sept 27, 2016 1:05:20 GMT 1
Years ago My freshly rebuilt yvps engine had an Annoying habit of being reluctant to engage N.
Worked ok at first fire up but as the engine warmed up, Neutral became increasingly difficult, almost impossible to find/select.
NOT fun in city traffic.
Pissed.. I dumped out the days old fill of Yamalube 10/40 and tried GL4. Seemed as an easier first try, than a teardown
It proved an Instant Fix. Cheap, easy to find and it works... what's not to like?
Just MY 2 cents.
Surprised that you feel that Automotive Engine oils don't cause Clutch problems.
Today's oils are full of Friction modifiers, at least in the better brands.
Mebe Wallmart oils have few to none?
But hey! whatever blows yer Jets .
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Post by looey on Sept 27, 2016 8:55:23 GMT 1
I hear ya Mr Bare but I currently have a YPVS engine in my Hybrid and it's not great to get into neutral when running and it makes no difference at all which oil is tried in there (some just smell a lot worse than others.....   ). The engine has been rebuilt twice in my ownership (by different people) and it's still the same   I can find neutral very easy by just tapping it in from 2nd gear just before I come to a stop and also with a blip of the throttle when stationary if needed, so it's pretty easy to live with. With regard the the different oils, yes, if you run an oil not designed specifically motorcycles (i.e. car engine oils) then you are asking for trouble as like you say, they have friction modifiers and are not designed to come into contact with the clutch plates. But any motorcycle specific oils (which are designed to come into contact with the clutch), 2-stroke specific gearbox oils and any MINERAL ONLY (well any I have come across), have never given any clutch problems at all. |
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Post by headcoats on Sept 27, 2016 9:25:08 GMT 1
My geartbox likes the Motul stuff for some reason 
Got Motul 5000 semi synthetic in now 10w40 Clutch doesn't slip |
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Post by Norbo on Sept 27, 2016 15:36:51 GMT 1
I use Motul
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Post by mattybeckett on Sept 27, 2016 16:53:23 GMT 1
Looks like Motul wins then hands down.
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Post by arrow on Sept 27, 2016 17:20:35 GMT 1
Looks like Motul wins then hands down. There is no denying that Motul is great oil, but the bike is not brand specific. |
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Post by bernardo on Sept 29, 2016 21:24:20 GMT 1
Castrolite was the oil of choice once upon a time, so how long would a motor last on lawnmower oil? I can only get synth or semi synth where I live.
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Post by skydemon on Oct 1, 2016 14:34:14 GMT 1
I also use Motul. Just me twopence worth
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). The engine has been rebuilt twice in my ownership (by different people) and it's still the same 
